MMC 3420 EXAM 1QUESTIONS AND ANSWERS
What is an independent variable? - Answer -The variable you think is the CAUSE
What is a dependent variable? - Answer -The variable that you think is effected by the
I.V. The EFFECT
When do you pose a hypothesis instead of a Research Question? - Answer -When
previous data, theory, or research backs up your claim
What makes a good hypothesis? - Answer -Clear, concise, testable (There are other
qualities . . .)
What makes a hypothesis one-tailed instead of two-tailed? - Answer -It predicts the
direction of change in the D.V., based on the direction/category of the I.V.
What is a null hypothesis? - Answer -The logical alternative to the hypothesis; What we
submit to significance testing
Why do we do significance testing? - Answer -To determine if the observed difference
is, meaningful or due to the I.V. we've proposed
Do one or two tailed hypothesis testing offer a more forgiving, or easier to find
significance type of test? - Answer -Two-tailed, because you look for differences in any
direction - the right (positive) and the left (negative)
What's the difference between a significant finding and finding with a large effect size? -
Answer -Significant findings are real, beyond chance, effect size has to do with the
strength or magnitude of that
Hypothesis Application - Answer -H1: The amount of time students spend on social
media is related to their GPA.
H2: Female students spend more time on social media than male students.
What is the independent variable? - Answer -H1: Time spent on social media; H2:
Gender
What is the dependent variable? - Answer -H1: GPA H2: Time spent on social media
Is it a one or two tailed test? - Answer -H1: Two-tailed H2: One-tailed
What is the null hypothesis? - Answer -H1: Time spent on social media is unrelated to
GPA, H2: Gender has no influence on time spent on social media
What is an independent variable? - Answer -The variable you think is the CAUSE
What is a dependent variable? - Answer -The variable that you think is effected by the
I.V. The EFFECT
When do you pose a hypothesis instead of a Research Question? - Answer -When
previous data, theory, or research backs up your claim
What makes a good hypothesis? - Answer -Clear, concise, testable (There are other
qualities . . .)
What makes a hypothesis one-tailed instead of two-tailed? - Answer -It predicts the
direction of change in the D.V., based on the direction/category of the I.V.
What is a null hypothesis? - Answer -The logical alternative to the hypothesis; What we
submit to significance testing
Why do we do significance testing? - Answer -To determine if the observed difference
is, meaningful or due to the I.V. we've proposed
Do one or two tailed hypothesis testing offer a more forgiving, or easier to find
significance type of test? - Answer -Two-tailed, because you look for differences in any
direction - the right (positive) and the left (negative)
What's the difference between a significant finding and finding with a large effect size? -
Answer -Significant findings are real, beyond chance, effect size has to do with the
strength or magnitude of that
Hypothesis Application - Answer -H1: The amount of time students spend on social
media is related to their GPA.
H2: Female students spend more time on social media than male students.
What is the independent variable? - Answer -H1: Time spent on social media; H2:
Gender
What is the dependent variable? - Answer -H1: GPA H2: Time spent on social media
Is it a one or two tailed test? - Answer -H1: Two-tailed H2: One-tailed
What is the null hypothesis? - Answer -H1: Time spent on social media is unrelated to
GPA, H2: Gender has no influence on time spent on social media
