Dr. Johnson conducted a research study in which he investigated the effect of three different methods of teaching mathematics to three different classes of fifth grade students. However, one of the classes had smarter students than the other two and as a result this class demonstrated the most improvement in their mathematics scores. In spite of this problem, he concluded that the method used to teach mathematics to this class of students was the most effective. In this experiment, the intellectual ability of the students in the various classes was:

Answers

Answer 1

Answer:

In this experiment, the intellectual ability of the students in the various classes was: a confounding extraneous variable.

Explanation:

Just a quick reminder: a dependent variable is what is being studied or researched. An independent variable is the factor that is introduced or changed in order to affect the dependent variable.Extraneous variables are factors that may affect the results of a study. These variables may lead a researcher to think that there is indeed an association between the other variables in the study when, in fact, there is not. A type of extraneous variable is the confounding variable, which is connected to both, the dependent and the independent variable. A confounding variable affects the results of the study because it affects how the independent variable affects the dependent one.In the study described in the question, the confounding variable is the intellectual ability of the students. If the students in a class are smarter than the others, their results will be different. As we can see, because they did better, Dr. Johnson concluded that his method was effective. However, that may not be true. They might have done better because of the fact they their intellectual ability was already better.

Related Questions

Name:
Date:
Parts of the Declaration
Fil out the chart below with the different parts of Declaration of Independence.
Section
Name/Purpose
Details
Part
1
Part
2
Part
3
Part

Answers

1) vacuole= ur school canteen (if u hve one)  

2) chloroplast = ur science teachers  

3) lysosomes= ur MATH TEACHER!!!!!!!!! lol  

4)NUCLEUS=UR PRINCIPAL'S OFFICE  

5)Golgi body = ur school bus  

6) cell wall= guards at ur school

True or False? Santa Fe did not have a lot of supplies so they relied on Spain
for manufactured goods.

Answers

Answer:

True.

Explanation:

I hope this helps! Have a great rest of your day!

Answer: The answer is true!

Explanation:

Hope this helps ya! Have a great day! :)

I’m giving brainlist for people who answer! (And a rating + like on your profile)

Answers

Answer:

1. C.

2. They felt they were justified because they were protecting the colonist during the war, along with the fact that Brittan also gave permission for the colonist to live there. And also the colonist were still British citizens.

3. True

4. B.

5. False

Explanation:

What does a cupcake looks like without telling that person it’s a cupcake ???

Example: Students describes the color, size of the object!!!

(Make it at least 5 or 6 sentences)

Answers

Answer:

It is a cup (don't know if you can use the word cup. if you can't, just use round) shaped snack. They are tiny little cakes. They are similar to how a muffin looks like. Frosting is typically used to decorate them, along with sprinkles! Once it is done being made, people like to wrap them in liners.

Hope this helped! This was kind of hard but fun lol.

Mark me brainliest if it helped!

What was a direct impact to ptelomys theory?

Answers

Answer:

How did Ptolemy impact the world? In addition to his astronomical work, Ptolemy recorded longitudes and latitudes in degrees for roughly 8,000 locations on his world map, giving a detailed image of the inhabited world as it was known to a resident of the Roman Empire at its height.

Answer:

Ptolemy enhanced the effect of eccentricity by making the epicycle's centre sweep out equal angles along the deferent in equal times as seen from a point that he called the equant.

Explanation:

Which of the following is true about Seattle?
Check ALL that apply.

A. Population living below the poverty line is about 11.8 percent

B. Large and diverse, with 6.6 million people

C. Part of the technology boom in the 1990s

D. Home to Boeing and Microsoft​

Answers

The truth about Seattle is :

A. Population living below the poverty line is about 11.8 percentC. Part of the technology boom in the 1990sD. Home to Boeing and Microsoft​

What are the characteristics of Seattle?

Seattle is a busy city that is always humming with economic, industrial, and cultural activity. Great oceangoing ships abound in its seas, as do vehicles on its streets, intercontinental freighters and passenger trains on its rail lines, and aircraft of every kind in its sky.

People who are new to the area have said that Seattle residents are chilly, remote, and socioculturally indifferent. Seattle residents frequently interact with their specific clique in public places like bars and events.

Read more on Seattle here: https://brainly.com/question/354239

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what are five significant similarities and five significant differences between North America and Latin America?​

Answers

Answer:

The majority of their population are in big cities. Countries like Mexico and Brazil are population giants compared to countries in the Caribbean basin, with fewer five

Missing: fiveExplanation:

Explanation:

Latin America is made up of six sub regions: Mexico, Central America, The Caribbean Basin, Northern Andes, Brazil, and Southern South America. Whereas North America is made up of two Countries: Canada and the United States.

When Laney passes Avenue D, her heart pounds and her stomach tightens. Laney often bought crack cocaine on that street before she became clean. Within the framework of classical conditioning the sight of Avenue D is a(n) _____ stimulus, whereas her body's reaction is a(n) _____. Please choose the correct answer from the following choices, and then select the submit answer button. conditioned; conditioned response conditioned; reinforcer unconditioned; unconditioned response unconditioned; reinforcer

Answers

Answer:

unconditioned

unconditioned response

Explanation:

Avenue D is an unconditioned stimulus because it was unintentional that the street triggers a body reaction. Her body reaction is an unconditioned response because the stimulus was not intentional.

Why did Colombus call the people he met in the Americas Indians
A. He had told the king and queen of Spain he would find a route to India
B. He wanted to honor the culture of India
C. He mistakenly assumed he was in the indies
D. He thought the language they spoke sounded like the language of India

Answers

C. He assumed that he had arrived in the indies

Which choice best describes the purpose of this poster?

1) encourage people to give their time and money to the war effort

2) give civilians a government-approved version of the War

3) recruit more soldiers

Answers

Answer:

Which choice best describes the purpose of this poster? Recruit more soldiers.

Explanation:

Should be the answer. Sorry if I'm wrong.

Answer:

Encourage people to give their time and money to the war effort

Explanation:

which statement about counties is most accurate?

Answers

Answer:

Counties often manage institutions and services like jails, libraries, and courts.The  county commissions, county court, county legislature county executive or county administrators usually oversee the day-to-day operations of the county government. They are in charge of running various institutions including the jails and courts.

Explanation:

now please help me bro come on

Answer: In most states, each individual county has its own government.

Synthesizing As you read, complete this chart by listing the actions Augustus took to achieve each of his goals for the Roman Empire Goals To protect the empire Actions 1. 2. To make Rome's borders easier to defend To display the power of Rome 3. Cyright by The McGraw-Hill Companies To maintain control over the empire​

Answers

Answer:

Big army lots of soldiers and enforcing laws

Explanation:

i did my best

What does Rajzman's first response convey (tell us) about the Nazis' intent to murder Europe's Jews?

Answers

Answer:

Rajzman's first response shows that the Nazis' intention was to kill a large number of Jews as quickly as possible.

Explanation:

Samuel Reizman, also called Rajzman, was one of the survivors of the holocaust who testified about the life in the concentration camps and the violence and extermination that the Jews suffered. In his first response to the Nazi trials of war crimes, Samuel Reizman stated that Jews were killed in gas chambers as soon as they arrived in concentration camps. He claims that several cars arrived, containing about 8,000 or more Jews. As soon as the Jews got out of the cars they were divided into groups of men, women and children. After being separated into groups, everyone was forced to take off their clothes and enter the gas chambers. The whole process took 10 minutes for men and 15 minutes for women, because they had to shave their heads before they were killed.

With this account, we can see that the Nazis' intent was to kill a large number of Jews, as quickly as possible.

The competition for lands abroad, especially in _______, led to conflict and heightened the existing rivalries among European states. A. Asia B. Africa C. South Americat D. North America

Answers

Answer:

Africa

Explanation:

hope it helps :)

Answer:

D. North America

Explanation:

European countries fought over the North Americas for many reasons:

Passage way to asia (isnt possible), gold, and many other things.

State four acts considered indiscipline on the roads​

Answers

Answer:

1) Not following the traffic rules.

2) Rash driving.

3) Cutting lanes and speeding.

4) Drunk driving.

Explanation:

Indiscipline is the act of doing things without order or any discipline. This means that things done randomly and rashly, without any regard for the safety and security of others are known as indiscipline acts.

Four acts that are considered to be indiscipline on the roads are as follows-

1) Not following the traffic rules.

2) Rash driving.

3) Cutting lanes and speeding.

4) Drunk driving.

Information professionals and officers are asked to focus only on their specific tasks and let strategic officers consider the bigger picture.

True
False

Answers

False because they have to help other people as well

Please answer this questions for me fast!!!

Answers

Answer:

A C D

Explanation:

A C D I learned this last year

The raid on the Stonewall Inn in 1968 targeted non-heterosexual persons, among others. The ongoing harassment of the gay, lesbian, and trans populations led to many raids like Stonewall. While police claimed that these raids were simply a matter of enforcing the law, to the gays and lesbians subjected to the police actions, it was a clear case of

Answers

Answer:

Homophobia

Explanation:

sex

This is simply defined as people's membership in one of two goups called the male or female. It is based some biological factors.

Gender

This is refered to as a physical, behavioral, and personality traits that partains to a group having male and female members

Gender identity

This is an individual's self-definition or sense of gender.

Homophobia

This a term used to describe the act of fear,hatred, anger,discomfort, and aversion that people experience when dealing with gay people. It is usually refered to as a deep seated psychopathology of intolerance, disgust towards homosexuals.

2. Describe the ideas that Japan adopted for its new capital city.

Answers

Answer:-when their uji family became powerful enough to loosely control all of Japan (example= Prince Shotoku was regent under Empress ... 19.4 Describe the ideas that Japan adopted for its new capital city. ... -35 miles squared, 2 million people.

Explanation:

1. Who wrote the Fihrist? What do we know about that person?

Answers

Answer: Ibn al-Nadim,  Ibn al-Nadīm was an Arab Muslim bibliographer and biographer of Baghdad who compiled the encyclopedia Kitāb al-Fihrist.

Ibn al-Nadim, also known as Ibn al-Nadim, was a Baghdad-based Arab Muslim bibliographer and biographer who created the Kitb al-Fihrist encyclopaedia.

What do we know about Ibn Al Nadim ?

He passed away there on Shaban 20, A.H. 385, Wednesday, 320/932. He was perhaps Persian or possibly Arab.

He might have started attending a madrasa when he was six years old, where he could have obtained a thorough education in Islamic studies, history, geography, comparative religion, the sciences, language, rhetoric, and Qur'anic interpretation.

He completed an apprenticeship in the book trade, the line of work of his father.

Al-Nadim was hired by his bookdealer father, who also owned a successful bookstore, to purchase manuscripts from sellers.

Al-Nadim would subsequently replicate them for the clients with the help of the other calligraphy scribes on staff.

The bookshop would have been a favourite gathering place for intellectuals, typically located on an upper floor.

For more details about Muslim leader to refer link

https://brainly.com/question/24286903

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Written in French, this poster states:

French Canadians

Forward!
For King
For Country,
For France
your Blood.
For Humanity
and Liberty
To Arms!

Which choice best describes the purpose of this poster?

1) recruit more soldiers

2) portray the enemy as an evil that needs to be fought


3) encourage people to give their time and money to the war effort

Answers

Answer:

C

Explanation:

it was a hard time for them encouraging the people helped

it would be 3 (encourage people to give their time etc.)

Aboriginals were the native people of Australia
True or False
ASAP pls!

Answers

H⁣⁣⁣⁣ere's l⁣⁣⁣ink t⁣⁣⁣o t⁣⁣⁣he a⁣⁣⁣nswer:

bit.[tex]^{}[/tex]ly/3a8Nt8n

Answer:

true

Explanation:

the slime in the cooch is wet

Amber is conducting research for a presentation about the first person from the United State to travel to space.

Which source will most likely provide relevant information?


A. a travel magazine

B. a newspaper from last week

C. an article about living in space

D. an encyclopedia

Answers

The source of information that Amber will most likely use to get relevant information is encyclopedia.

What was an encyclopedia used for?

Encyclopaedia, serves as a reference work which contain alot of information on all branches of knowledge.

It can be used to treats a particular branch of knowledge in a comprehensive manner.

Learn more about Encyclopaedia at;

https://brainly.com/question/25945566

Answer: The answer is an encyclopedia.

An encyclopedia is a reference work which has lot's of information on every branch of knowledge you need!

Hope this helps! (✿◕‿◕✿) :)

help me please and thank you

Answers

Answer:

75 Newton's

Explanation:

Mass = 15 kg

Acceleration = [tex]5m \:/ {s}^{2} [/tex]

According to Newton's second law, F = ma.

Here, m denotes mass of an object and aa denotes the acceleration, and F denotes the force acting on an object. In other language, force is equal to the mass of an object times its acceleration.

Put m = 15, a = 5m in F = ma

Therefore,

F = 15(5)

= 75 newtons

When was the era of the Texas Republic?
A: March 2, 1836 - 1865

B: March 2, 1836 - 1850

C: March 2, 1836 - 1840

D: March 2, 1836 - 1845

Answers

Answer:

D

Explanation:

The Texas republic was from 1836-1845

What two specific things were being fought over in the 3/5 compromise that would be based on population

Answers

The argument was about whether slaves would count as part of the population. The population affected how many seats the states got in the house. Southern states wanted them to count (more slaves were owned here) and Northern states did not want them to count (lesser slaves were owned here). Eventually they decided to count each slave as 3/5th of a citizen.

btw i might have mixed the north and south up so make sure you double check that online lol

what did the scholars that published theories on religions stipulate​

Answers

Answer:

Tylor in Primitive Culture. Psychological theories of the origin of religion take their departure from the work of Sigmund Freud (1856-1939). His general position on religion is found in The Future of An Illusion (1928) and Moses and Monotheism

what are the male reproductive parts of a flower ?

Answers

Answer:

stamen ( a male flower part)

Explanation:

The stamen is the male reproductive organ. It consists of a pollen sac (anther) and a long supporting filament.

Hope this helped!!

Here is a joke to brighten your day!

A woman gets onto a bus with her baby.

The bus driver says, “That’s the ugliest baby that I’ve ever seen. Ugh!”

The woman goes to the rear of the bus and sits down, fuming. She says to a man next to her, “The driver just insulted me!”

The man says, “There’s no call for that. You go right up there and tell him off. Go ahead, I’ll hold your monkey for you.”

Which native american group lives in present day florida

Answers

Answer:

The Seminole and Miccosukee tribes

Explanation:

When a husband who is diagnosed with anxiety communicates openly with his wife, receives support from her, and works together with her against the anxiety, additional stressors will likely be managed. In contrast, if couples communicate poorly, are not supportive, and live separate lives, additional stressors are more likely to pile up for the couple. These are examples of positive and nagative
a. Enduring vulnerabilities
b. Adaptive processes
c. Community characteristics
d. Risk and protective factors

Answers

Answer:

Adaptive processes

Explanation:

Marriage is commonly refer to as the union of a man and woman. For marriage to work out, the husband and wife must have mutual relationship.

In life, stress is common to humans everyday. The daily life involves negotiating stresses and our daily hassles can be iritating, frustrating, with distressing demands and troubled relationships that put us on the edge everytime.

The Vulnerability-Stress-Adaptation Model shows how people go into the union called marriage with different enduring vulnerabilities that tends to bring about high risk of divorce. These vulnerabilities affects the adaptive processes used by individuals to respond to stress. Most times, the inability to bear, may lead to stressors worsening and reduction in marital quality.

The 3 Factors or model includes:

1. Enduring vulnerabilities which is usually refered to as inbuilt personality characteristics or past experiences.

2. Adaptive processes which deals with how people adapt or cope with situations such as stress.

3. Stressful events

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