Levels of an independent variable (Practice)
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Transcript of Levels of an independent variable (Practice)
![Page 1: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/1.jpg)
Practice Problems
Differentiating Between
Three or More Levels
Two Levels
![Page 2: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/2.jpg)
Problem #1
![Page 3: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/3.jpg)
Some of your fellow school counselors feel that students who request to be in the same lunch period as their friends tend to perform worse academically. You collect the names of a sample of students who make this request and a sample of students who don’t make the request and then take an average of their GPAs to determine which group performs better.
How many levels of the independent variable are therein this problem?
Advance the slide to see the options
![Page 4: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/4.jpg)
Some of your fellow school counselors feel that students who request to be in the same lunch period as their friends tend to perform worse academically. You collect the names of a sample of students who make this request and a sample of students who don’t make the request and then take an average of their GPAs to determine which group performs better.
How many levels of the independent variable are therein this problem?
Advance the slide to see the answer
Three or More Levels
Two Levels
![Page 5: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/5.jpg)
Some of your fellow school counselors feel that students who request to be in the same lunch period as their friends tend to perform worse academically. You collect the names of a sample of students who make this request and a sample of students who don’t make the request and then take an average of their GPAs to determine which group performs better.
How many levels of the independent variable are therein this problem?
Advance the slide to see the explanation
Three or More Levels
Two Levels
![Page 6: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/6.jpg)
Some of your fellow school counselors feel that students who request to be in the same lunch period as their friends tend to perform worse academically. You collect the names of a sample of students who make this request and a sample of students who don’t make the request and then take an average of their GPAs to determine which group performs better.
How many levels of the independent variable are therein this problem?
Advance the slide to see the explanation
Three or More Levels
Two Levels
ExplanationThe Independent Variable could be called “Lunch Request Status” with two levels: (1) Those who requested to be with their friends and (2) those who did not.
![Page 7: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/7.jpg)
Some of your fellow school counselors feel that students who request to be in the same lunch period as their friends tend to perform worse academically. You collect the names of a sample of students who make this request and a sample of students who don’t make the request and then take an average of their GPAs to determine which group performs better.
How many levels of the independent variable are therein this problem?
Advance the slide to see the explanation
Three or More Levels
Two Levels
1st level
2nd Level
ExplanationThe Independent Variable could be called “Lunch Request Status” with two levels: (1) Those who requested to be with their friends and (2) those who did not.
![Page 8: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/8.jpg)
Problem #2
![Page 9: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/9.jpg)
Advance the slide to see the options
You just overheard a discussion among students in which they said that atheists suffer from depression more because they don’t believe in God. You are skeptical of this claim and set out to prove that one’s belief in God is not connected with levels of depression.
How many levels of the independent variable are therein this problem?
![Page 10: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/10.jpg)
Advance the slide to see the answer
Three or More Levels
Two Levels
You just overheard a discussion among students in which they said that atheists suffer from depression more because they don’t believe in God. You are skeptical of this claim and set out to prove that one’s belief in God is not connected with levels of depression.
How many levels of the independent variable are therein this problem?
![Page 11: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/11.jpg)
Advance the slide to see the explanation
Three or More Levels
Two Levels
You just overheard a discussion among students in which they said that atheists suffer from depression more because they don’t believe in God. You are skeptical of this claim and set out to prove that one’s belief in God is not connected with levels of depression.
How many levels of the independent variable are therein this problem?
![Page 12: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/12.jpg)
Advance the slide to see the next problem
Three or More Levels
Two Levels
Explanation
The independent variable could be “belief in God status” with two levels: The (1) presence or (2) absence of a belief in God.
You just overheard a discussion among students in which they said that atheists suffer from depression more because they don’t believe in God. You are skeptical of this claim and set out to prove that one’s belief in God is not connected with levels of depression.
How many levels of the independent variable are therein this problem?
Belief / Unbelief = 2 levels
![Page 13: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/13.jpg)
Problem #3
![Page 14: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/14.jpg)
Advance the slide to see the options
Lately you have had several younger high school students talk to you about having suicidal thoughts. You have a hunch that such thoughts differ across grades (freshmen, sophomores, juniors, and seniors)
How many levels of the independent variable are therein this problem?
![Page 15: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/15.jpg)
Advance the slide to see the answer
Lately you have had several younger high school students talk to you about having suicidal thoughts. You have a hunch that such thoughts differ across grades (freshmen, sophomores, juniors, and seniors)
How many levels of the independent variable are therein this problem?
Three or More Levels
Two Levels
![Page 16: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/16.jpg)
Advance the slide to see the explanation
Lately you have had several younger high school students talk to you about having suicidal thoughts. You have a hunch that such thoughts differ across grades (freshmen, sophomores, juniors, and seniors)
How many levels of the independent variable are therein this problem?
Three or More Levels
Two Levels
![Page 17: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/17.jpg)
Advance the slide to see the next problem
Lately you have had several younger high school students talk to you about having suicidal thoughts. You have a hunch that such thoughts differ across grades (freshmen, sophomores, juniors, and seniors)
How many levels of the independent variable are therein this problem?
Three or More Levels
Two Levels
Explanation
The independent variable (grade in school) has four levels (freshmen, sophomores, juniors, and seniors).
![Page 18: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/18.jpg)
Problem #4
![Page 19: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/19.jpg)
It is time for graduating seniors to begin applying for college and you want to know if acceptance rates differ across gender. You compare the average acceptance rates for males and females to see if there is a difference?
How many levels of the independent variable are therein this problem?
Advance the slide to see the options
![Page 20: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/20.jpg)
It is time for graduating seniors to begin applying for college and you want to know if acceptance rates differ across gender. You compare the average acceptance rates for males and females to see if there is a difference?
How many levels of the independent variable are therein this problem?
Advance the slide to see the answer
Three or More Levels
Two Levels
![Page 21: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/21.jpg)
It is time for graduating seniors to begin applying for college and you want to know if acceptance rates differ across gender. You compare the average acceptance rates for males and females to see if there is a difference?
How many levels of the independent variable are therein this problem?
Advance the slide to see the explanation
Three or More Levels
Two Levels
![Page 22: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/22.jpg)
It is time for graduating seniors to begin applying for college and you want to know if acceptance rates differ across gender. You compare the average acceptance rates for males and females to see if there is a difference?
How many levels of the independent variable are therein this problem?
Explanation
The independent variable is gender with two levels: males & females
Advance the slide to see the next problem
Three or More Levels
Two Levels
![Page 23: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/23.jpg)
Problem #5
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You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps them improve in this area.
Advance the slide to see the options
![Page 25: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/25.jpg)
You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps them improve in this area.
Advance the slide to see the answer
Three or More Levels
Two Levels
![Page 26: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/26.jpg)
You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps them improve in this area.
Advance the slide to see the explanation
Three or More Levels
Two Levels
![Page 27: Levels of an independent variable (Practice)](https://reader036.fdocuments.net/reader036/viewer/2022081800/55adf3631a28abd8078b463e/html5/thumbnails/27.jpg)
You administer a time-management test before and afterstudents take a course on improving their organizational skills to see if this course helps them improve in this area.
The End
Three or More Levels
Two Levels
Explanation
The independent variable is time with two levels: before and after