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Practice Problems How many independent variables are there? One Zero Two or more
| Date post: | 21-Jul-2015 |
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Practice Problems
How many independent variables are there?
OneZero Two or more
Problem #1
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 all students who make this request and then take an average of their GPAs to determine which group performs better.
Advance the slide to see the options
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 all students who make this request and then take an average of their GPAs to determine which group performs better.
Advance the slide to see the answer
OneZero Two or more
How many independent variables are there?
Advance the slide to see the explanation
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 all students who make this request and then take an average of their GPAs to determine which group performs better.
OneZero Two or more
How many independent variables are there?
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 all students who make this request and then take an average of their GPAs to determine which group performs better.
Advance the slide to see the explanation
ExplanationIn this study students request status (requesting or not) is the independent variable or in other words students request status is independent of GPA because it is not influenced by it. On the contrary it supposedly influences GPA.
OneZero Two or more
How many independent variables are there?
Problem #2
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 amount of depression.
Advance the slide to see the answer
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 amount of depression.
OneZero Two or more
How many independent variables are there?
Advance the slide to see the explanation
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 amount of depression.
OneZero Two or more
How many independent variables are there?
Advance the slide to see the next problem
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 amount of depression.
Explanation
In this study students’ belief status (believe or not) is the independent variable or in other words belief status is independent of depression. The idea here is that depression supposedly does not cause a belief or lack of belief in God and is therefore independent of it (this could be debated but that is the general idea).
OneZero Two or more
How many independent variables are there?
Problem #3
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). You also think it is affected by gender.
Advance the slide to see the options
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). You also think it is affected by gender.
OneZero Two or more
How many independent variables are there?
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). You also think it is affected by gender.
OneZero Two or more
How many independent variables are there?
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). You also think it is affected by gender.
Explanation
In this study there are two independent variables: grade level and gender or in other words grade level and gender are independent of suicidal thoughts. The idea here is that suicidal thoughts cannot change or influence your gender nor your grade in school.
OneZero Two or more
How many independent variables are there?
Problem #4
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?
Advance the slide to see the options
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?
Advance the slide to see the answer
OneZero Two or more
How many independent variables are there?
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?
Advance the slide to see the explanation
OneZero Two or more
How many independent variables are there?
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?
Explanation
In this study gender is the independent variable or in other words gender is independent of acceptance rates. The idea here is that acceptance rates cannot change or influence your gender.
Advance the slide to see the next problem
OneZero Two or more
How many independent variables are there?
Problem #5
Your principal has asked you to determine if the average ACT scores at your school are significantly different than ACT scores nationally. The national average the previous year was 23.2 and your school’s average was 24.6.
Advance the slide to see the options
Your principal has asked you to determine if the average ACT scores at your school are significantly different than ACT scores nationally. The national average the previous year was 23.2 and your school’s average was 24.6
Advance the slide to see the answer
OneZero Two or more
How many independent variables are there?
Your principal has asked you to determine if the average ACT scores at your school are significantly different than ACT scores nationally. The national average the previous year was 23.2 and your school’s average was 24.6
Advance the slide to see the explanation
OneZero Two or more
How many independent variables are there?
Your principal has asked you to determine if the average ACT scores at your school are significantly different than ACT scores nationally. The national average the previous year was 23.2 and your school’s average was 24.6
Explanation
There is no independent variable in this study. At this point we are not interested in knowing what influences ACT scores (the dependent variable), we just want to compare your sample to the population average ACT scores.
Advance the slide to see the next problem
OneZero Two or more
How many independent variables are there?
Problem #6
You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps students improve in this area.
Advance the slide to see the options
You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps students improve in this area.
Advance the slide to see the answer
OneZero Two or more
How many independent variables are there?
You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps students improve in this area.
Advance the slide to see the explanation
OneZero Two or more
How many independent variables are there?
You administer a time-management test before and after students take a course on improving their organizational skills to see if this course helps students improve in this area.
Explanation
The independent variable in this study is time - before and after taking the course. The dependent variable is student growth measured by the test.
Two or more
How many independent variables are there?
OneZero
The End
