Why do scientists try to control most variables in an experiment or observational study

Answers

Answer 1
To make "The most correctable solution".
Answer 2
Final answer:

In an experiment or observational study, scientists control most variables to isolate the impact of the independent variable on the dependent variable without the influence of other factors. This allows for assessing cause-and-effect relationships accurately and minimizes bias. Control and experimental groups are used for comparisons.

Explanation:

Scientists strive to control most variables in an experiment or observational study to ensure the reliability and objectivity of their results. The key idea is to isolate the impact of the independent variable on the dependent variable without the influence of other extraneous factors.

An example provided is the use of a control group and an experimental group in a drug efficacy study. Both groups would be nearly identical in all ways except for one - the experimental group receives the actual drug while the control group receives a placebo. This design allows scientists to attribute any observed differences in the groups' outcomes to the drug, rather than some other uncontrolled factor.

In such experimental research, one characteristic (the explanatory variable) is manipulated to observe its effect on another characteristic (the response variable). This careful control and manipulation of variables provide a way to test cause-and-effect relationships and make causal statements. It's crucial to note that to minimize bias, researchers often conduct experiments in a controlled environment and maintain the same conditions for all groups, except the variable being studied.

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Related Questions

Who was in charge of Cuba until 1959, and was seen as a U.S.-backed dictator?

1. Che Guevara 2. Fidel Castro 3. Salvador Allende 4. Fulgencio Batista

Answers

Fidel Castro came after 1959, after the previous dictator, Fulgencio Batista was overthrown. Going back to that, Fulgencio Batista led a military dictatorship and he ruled until 1959. The answer is 4.
Fulgencio Batista was in charge of Cuba until 1959.





Multiple Choice
Use the timeline to answer the question.

In which dynasty did the reign of the pharaohs end?

A.
Kingdom

B.
Middle Kingdom

C.
New Kingdom

D.
Old Kingdom

Answers

The answer should be C, New Kingdom Dynasty. Hope this helps! :D

How many slaves joined the British during the American revolution

Answers

300 slaves is answer
I believe it is 300 :)

When the temperature of the environment changes, the body temperature of a reptile (1 point) changes. stays the same. always increases. always decreases

Answers

When the temperature of the environment changes, the body temperature of a reptile (changes).
changes. A reptile is an ectotherm or in common terms, cold blooded. Their body temperature changes with the changes to their environment. So with that in mind, let's look at the available choices. changes. * This looks like the correct answer. Notice it doesn't say increase or decrease. But then the question itself didn't specify in what direction the temperature was changing. stays the same. * This is in direct contradiction to what a cold blooded animal is. So it's wrong. always increases. * This would be quite a trick. If it were true, you'd see a lot of reptiles spontaneously bursting into fire since the temperature during the day constantly changes and this would imply the reptiles getting hotter and hotter and hotter ... until they either die from getting too hot or burst into flame. This isn't happening, so this is definitely the wrong answer. always decreases. * Another neat trick. I don't see a whole lot of reptiles encased in ice during the summer which is exactly what this would imply if it were true. Although if it were true, it would be wonderful to power freezers and refrigerators by simply stuffing some poor reptile into the box. Would definitely save a lot of money on air conditioning as well. But it's not and this answer is wrong as well.

Which statement most accurately describe the process of respiration?

Answers

The correct option is this: IT OCCURS CONTINUOUSLY IN THE CELLS OF ALL ORGANISMS AND OFTEN INVOLVE THE EXCHANGE OF GASES.
In humans, respiration involves the breathing in of oxygen and the breathing out of carbon dioxide in order to stay alive. The plants also carry out the process of respiration.

which statement best describes georgia as a royal colony

Answers

the land policies of Trustees were relaxed to allow individuals to purchase large tracts of land. Hope this helps, good luck.

The Collective Unconscious Earlier in this lesson, you learned about the idea of a collective unconscious set forth by psychoanalytic "dissident," Carl Jung. This concept is not only important to the field of psychology, but it is one that is widely used by various disciplines in the Humanities. For this assignment you will create a brief PowerPoint presentation that illustrates the collective unconscious of your particular culture. What sort of symbols and archetypes emerge from your research? What sort of values and/or meanings do these symbols represent? How does this collective unconscious influence individual behavior

Answers

Final answer:

The collective unconscious is the part of the unconscious mind that carries ancestral memories and experiences. Symbols and archetypes derived from it are reflective of a culture's values and beliefs. These symbols, shaping beliefs and actions, can influence individual behavior.

Explanation:

The collective unconscious, a concept introduced by Swiss psychiatrist Carl Jung, is a part of the unconscious mind that is derived from ancestral memory and experience and is common to all humankind. This collective unconscious manifests in the form of archetypes and symbols. These symbols, which emerge out of a particular culture, are resultant of values, beliefs, and experiences shared across generations in that culture.

As an example, in American culture, the bald eagle could symbolize freedom and independence due to its significance in national imagery and its portrayal as a free and powerful creature. Similarly, liberty and equality might be personified as Lady Liberty. Such symbols often have an impact on individual behavior by shaping their beliefs, motivations, and actions through collective societal influence.

So, when doing the research for your PowerPoint presentation, you need to look for such symbols and archetypes in your culture which may include folklore, religious or historical figures and events, national symbols, etc. Once you identify these symbols, try to understand the underlying values they portray and how they might be influencing individual and collective behavior in your culture.

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One of the factors that contributed to wealth in some parts of the Middle East is a surplus of

A. agriculture
B. energy
C. industry
D. labor

Answers

The answer is either b or c. id go with C considering the oil industry is booming over there.

The Answer Would Be B: Energy

For how many years did the Jews wander without a country?

Answers

the jews wander without a country for about 40 years before reaching there destination

40 years is the answer

(1) Climate is the average weather experienced in a given geographic area. (2) Areas fall into a climate categories according to their year-round temperature and rainfall. (3) An oppressively hot and humid region, for instance, would be said to have a tropical climate.

What is the pattern of this organization of the passage?

A. Defenition and example
B. Comparison and/or contrast
C. Cause and effect

Answers

I believe that the answer is B. I think. Hope this helped.

Answer:

c, cause and effect

Explanation:

because of the weater, it can cause a tropical climate

I’m the first half of the 20th century literacy tests poll taxes and grandfather clauses were southern states in order to

Answers

Deny suffrage to African Americans.

Hope this helps!

To assign the proper number of seats for the House of Representatives you need to know what?

Answers

to assign the proper number of seats for the house of representatives you need to know the population

How did the assembly line help boost the American economy?

Answers

The assembly line was at the beginning of the vehicle age when Ford Mobiles were the first popular cars throughout American culture. The assembly line was closely related with Ford industries, which worked together to boost American economy. It created jobs, spread American industries, and created a brand that was positive to America's image during the 20 century.


Please vote my answer brainliest. thanks!
It helped produce more goods, at a faster rate, allowing the economy to recover more money. Also, it creates more jobs.

I hope this helps!

Explain the meaning of the quote “ Let every man do his duty , and be true to his country”

Answers

From the boston tea party, they were saying why they had to dump all the tea into the river to make them true to there own country

The site of the biggest and bloodiest Civil War battle in Georgia was
A)
Andersonville.
B)
Atlanta.
C)
Chattanooga.
D)
Chickamauga.

Answers

Your answer is D Chickamauga because it was the second most bloodiest battle with almost 34,000 dead its lasted 3 years before ending and it was known as the second most bloodiest battle in the Civil War also its not A because Anderson was naught a bloody battle it also wasn't B because Atlanta it was a big battle but its not a bloody battle and when it came down to rather C, or D I choose D because C was a big battle but it wasn't so much as bloody its more like long.

Your answer is D.
The site of the biggest and bloodiest Civil War battle in Georgia was D) Chickamauga.
The battle of Chickamauga was from on September 18th-20th of 1863. It had 34,624 casualties. It was the third to worst battle in the civil war with the most casualties, the other two worst being the Battle of Spotsylvania Courthouse being second, and the Battle of Gettysburg being the first. It ended up being a Confederate victory lead by General Braxton Bragg.

The northern portion of Canada is covered by boreal forests, which are characterized by
A) replanted rows of oak trees.
B) thickly grown rain forests.
C) dense coverings of pine trees.
D) sparsely placed deciduous trees.
13)
Because Canada is a parliamentary democracy, its political leader
A) is whoever is the eldest child of the current reigning monarch.
B) is elected by the majority of the popular votes of its citizens.
C) is chosen by the party with the majority of members in the legislature.
D) is elected by an electoral college chosen by the unicameral legislature.
14)
Canada is a member of the Commonwealth. This membership is a result of Canada having once been a part of which empire?
A) the Dutch Empire
B) the British Empire
C) the Spanish Empire
D) the Napoleonic Empire
15)
Canada loses over 500,000 hectares of Boreal Forest each year due to
A) pine beetles.
B) suburban sprawl.
C) clear-cutting for consumer products.
D) the expansion of the cattle industry.
16)
In which country would you find tundra?
A) Brazil
B) Canada
C) Jamaica
D) Mexico
17)
Canada is the largest trading partner for the United States because
A) the U.S. cannot get goods from other places.
B) Canada has better farming areas than the U.S.
C) the U.S. and Canada are unified by trade agreements.
D) Canada and the U.S. are located close to one another.

Answers

Answer:

12. (c)dense coverings of pine trees

13. (c)it is chosen by the party with the majority of members in the legislature.

14.(b)the british empire

15.(c)clear cutting for consumer products

16.(c)Jamaica

17.(c)the u.s and canada are unified by trade agreements

Explanation:

Your welcome!!!!!!!!!!!!11

What was most dangerous about signing the declaration of independence
A. the signers would lose their political postitions
B. the signers would be traitors for which they would be hung if captured
C. the signers would be traitors of loyalist anger and possible abused
D. the signers would have to pay war

Answers

Answer: The answer is B.

Explanati56 men risked high treason against the King of England by signing the document. Essentially, they signed their death warrant because that was the penalty for risking high treason against the king.

Final answer:

Signing the Declaration of Independence was most dangerous due to it being considered treason against the British Crown. If the American Revolution had been unsuccessful, the signers could have faced execution.

Explanation:

The most dangerous aspect of signing the Declaration of Independence was that the signers were effectively committing treason against the British Crown. In term of the choices given, the correct answer would be B. the signers would be traitors, for which they would be hung if captured. By declaring independence, the signers were openly rebelling against their government, and if the American Revolution had not been successful, they likely would have been executed. Therefore, the act of signing the Declaration was a brave and risky move, as it could have led not only to professional and social repercussions, but also to their death.

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Why do you think some Egyptians objected to the idea of being ruled by a women?
PLEASE ANSWER FOR A BRAINLEST ANSWER! <3

Answers

Final answer:

Some Egyptians may have objected to female rulership due to societal norms and traditions that favored male succession, despite women's significant legal rights and societal roles.

Explanation:

The objection to being ruled by a woman in ancient Egypt may have stemmed from the socio-political norms of the time, despite the relatively progressive status women enjoyed. Although Egyptian women had legal rights and played significant roles in society, there was still a prevailing preference for male leadership, influenced by longstanding traditions and the symbolic importance of a male pharaoh. The case of Hatshepsut, for instance, exemplifies this tension; she ruled competently as pharaoh for two decades, but after her death, steps were taken to erase her legacy, which could suggest a discomfort with female rulership from her successors, whether due to expectations of male succession, an assertion of their own legitimacy, or the perception of female rule as an aberration.

What was the Meiji government's position on education for all Japanese children

Answers

Hello Countrybackroaovl1um, The Meiji government's position on education for all Japanese children is that education was most important for the brightest students.

Answer:

The Meiji government's position on education for all Japanese children is very important and they promoted western-style education.

Explanation:

The Meiji government sponsored the industrialization and promoted a western-style education system among the children, the Meiji focused and created a system which mainly emphasizes knowledge-based on Science and Mathematics.

The Meiji government adopted the metric system and the western calendar, The Meiji aim was to combine western science with eastern values.

Which of these advances did ancient Egyptians make?

A. Created a calendar based on the stars that included 12 months
B. Invented the sailboat
C. Used iron tools for the first time
D. Correctly identified all human organs

Answers

Answer:

The other guy isn't right. The answer is A. Created a calendar based on the stars that included 12 months.

Explanation:

I took the f-ing test

The advances created by the ancient Egyptians was the generation of the calendar, which was based on the stars, including the twelve months. Thus, option (A) is correct.

What was Ancient Egypt?

Ancient Egypt was one of the oldest and popular civilization of the times which was located in  Northeast Africa that was centered in the Egyptian Nile Valley. It was established around  3100 BC with the political union of Upper and Lower Egypt under Menes.

The civil calendar of Ancient Egypt was a solar calendar which included   a 365-day year. The year was divided into three of 120 days each, with an intercalary month of five epagomenal days considered outside the year. Each season was divided into four 30-day months.

Therefore, it can be concluded that option (A) is correct.

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Many geologic processes and events are due to _____.A.erosionB.depositionC.weatheringD.plate tectonics

Answers

i am pretty sure its d

Answer:

D) Plate tectonics

Explanation:

Between the options to pick from, the Plate tectonics are the main reason of different geologic processes and events.

The plate tectonics are irregulary shaped solid huge rocks. the rocks and plates compossition vary depending of the location, the ones located in the continental crust are made up with lightweight minerals, the opposite happens with the oceanic ones, with a heavier and more dense composition.

This constrast between the Plates and the different crusts allows ocasionally a considerable movement of the plates, generating different geologic events like tremors, earthquakes, tsunamis, etc.

Which country is dealing with an Independence movement totally based on language

Answers


The answer maybe right is Canada.

How are Sumerian society and Egyptian society alike and different

Answers

they both created their own writing system, both workshop both settle in fertile area

they were different because Egypt thought their God was more powerful,Egyptian had a controllable flood while sumer had trouble predicting th flood,Egypt believe in after lfe while sumer Ian did not

Why did Great Britain pass the sugar act, the stamp act , and the townshend acts

Answers

Sugar Act and the Stamp Act were both British Laws that were passedby parliament during the reign of King George III and instigated by the government led by Lord Grenville. The Sugar Act was passed in 1764 and the Stamp Act was passed a year later in 1765.
parliament wanted more money.

Name two ways in which the action of Britain and french affected the United States?

Answers

Answer:The actions of Britain and France in the late eighteenth and early nineteenth centuries had significant impacts on the United States, including shaping foreign policy decisions such as the Treaty of Alliance, prompting the War of 1812, and influencing economic policies like the Embargo of 1807

Pls write a 3 paragraph essay on how social media is good

Answers

What is social media? Social media can be an app or website that let you communicate. I think that social media is beneficial for people because it can help you in your everyday life.

Social media can be beneficial because you can help your friends or yourself when you are absent. Social media can help you when you or a friend is absent absent because you can take a picture of notes and send it to your friend or thay can send them to you. You can also use social media for when your absent to find out what you did in class or look for your homework. You can also use social media to write an email to the school explaining why you were absent.

Social media is also good because you can use it go communicate. You can use social media if you are on vacation if you want to share a picture of what you are doing or where you are. You can also use it to call or text people if you aren't with them at the moment.

You can also use social media for business purposes. You can use it of you need to pay bills. You can also use social media incase you need to communicate with your boss by emailing them. You can also use it if you need to leave early from work and need to explain why but you don't have the time.

Social media can be very helpful and can help you a lot. While social media is still improving it can make our lives easier and help us in many ways. And that's how social media can be helpful to you and everyone else who uses it.
That is too long. But I agree with the other person who commented.

Which Asian countries have democratic systems of government?

A.India, Japan, and South Korea

B.China, Vietnam, Japan

C.North and South Korea, Japan

D.India, China, Japan 

Answers

The best answer among the following choices would be the first option: India, Japan, and South Korea.

Answer:

A. India, Japan, and South Korea

Explanation:

A system of democratic government encompasses all elements of a country's political organization. In this type of government, democracy is not just a form of state or constitution, but the constitutional, electoral and administrative order, the balance of state powers and bodies, the political priority of Parliament, the alternative system of government and opposition groups . Democracy is a social organization in which political control is exercised by the people. It is a system of government that results from the free choice of government officials, which is expressed by the union and the will of the majority of those governed, confirmed through votes.

Although this type of government is very popular, many countries have not adopted these forms of governance, such as China and North Korea. Among the options given in the question, the democratic countries are India, South Korea and Japan.

Which of these is the BEST example of debt?
A) A person buys a new car.
B) A person pays interest on a mortgage.
C) A person deposits a paycheck into a savings account.
D) A person withdraws money from a bank account using an ATM card.

Answers

The answer is B
hope this helps

Answer:

B

Explanation:

An example of debt is when a person pays interest on a mortgage. Debt is a financial obligation to repay a loan, while credit is the amount a borrower may use. Remember, too, that even though most people pay for cars in installments, many do pay cash for the entire value of the automobile and do not go into debt in the process.

what are non examples of imperialism

Answers

Not using foreigners to increase your voted amount

Answer:

Non-examples of "Imperialism" is "Nationalism"

Explanation:

Key examples of Nationalism or Non-Imperialism as follows:

Nationalism is a kind of physical and moreover the mental attachment of people towards their country or nation.Independent government of any nation called its-self a nation-state.The only nation-state can make democracy possible.Cooperation and global peace depend on the sustainable and strong nation-state.Patriotism describes personal identity, civic virtue and promotes self-sacrifice for the nation-state.

Use the word arsenal in a sentence about Harpers Ferry.

Answers

There was a US military Arsenal at Harpers Ferry, so John Brown led a slave revolt to take it over, but was put down by U.S. Commander at the time Robert E. Lee
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