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Engagement Exercise: CU - Dependent Samples T-Test

Engagement Exercise: Dependent (Paired) Samples T-Test

Goal is at least 70% proficiency.

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Question 1 of 10

What was the research question being examined in the video?

A

Is there a difference in education level between males and females

B

Is there a difference in education level among males

C

Is there a difference in education level among females

D

Is there a difference in fear of statistics scores between time 1 and time 2?

Question 2 of 10

Based on the video, which of the following is the independent variable?

A

time 1 and time 2

B

fear of statistics

C

time 1

D

time

Question 3 of 10

In general, when comparing a continuous measure across two time periods, the independent variable is...  

A

nominal or interval scale

B

ordinal or ratio scale

C

nominal or ordinal scale

D

ratio or nominal scale

Question 4 of 10

When comparing a continuous measure across two time periods, the dependent variable is...  

A

nominal or interval scale

B

ratio or ordinal scale

C

ratio or nominal scale

D

interval or ratio scale

Question 5 of 10

The statistical test used to compare two time periods on a continuous variable is...

A

one-sample t-test

B

dependent samples t-test

C

paired samples t-test

D

options B and C

Question 6 of 10

The null hypothesis for dependent (paired) samples test states that...  

A

there is a significant difference between time periods

B

the group are statistically nonequivalent

C

there is no significant difference between time periods

D

options b and c

Question 7 of 10

The alternative hypothesis states that...  

A

there is no significant difference between groups

B

there is a significant difference between groups

C

the group are statistically equivalent

D

all of the above

Question 8 of 10

In a within-groups design, we are... 

A

assessing differences between different groups of subjects

B

assessing differences between and within different groups of subjects

C

assessing differences across time periods between the different groups of subjects

D

assessing differences across time periods within the same group of subjects

Question 9 of 10

Which of the following is the dependent variable?

A

time 1 and time 2

B

time

C

time 1

D

fear of statistics

Question 10 of 10

If the results of the dependent samples t-test reveal a statistically significant differences in fear of statistics mean scores, then...

A

we reject the null

B

we fail to reject the null

C

we accept the null

D

we reject the alternative hypothesis

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