QUESTION 16 A study has two groups of subjects who receive different treatments

Question

QUESTION 16

               A study has two groups of subjects who receive different treatments but take the same posttreatment t test.  What analytic statistic will be appropriate?

ANOVA

t test

chi-square

Pearson's r

4 points   

QUESTION 17

A study measures one group of subjects continuously on two different variables.  What analytic statistic will be appropriate?

t test

ANOVA

chi-square

Pearson's r

4 points   

QUESTION 18

A study’s data consist of a nominal count of the number of subjects falling into various categories. What analytic statistic will be appropriate?

t test

ANOVA

Chi-square

Pearson's r

4 points   

QUESTION 19

A study has four groups of subjects who are each given a different treatment, but who take the same posttreatment test. What analytic statistic will be appropriate?

t test

ANOVA

Pearson's r

4 points   

QUESTION 20

What is the primary deciding factor between analyzing the data with a normal deviate Z test versus a one-sample t test?

whether or not the population mean is known

whether or not the population standard deviation is known

whether or not the sample standard deviation is known

calculation convenience

4 points   

QUESTION 21

Your study has two independent variables.  What is the primary deciding factor between analyzing the data with an ANOVA versus a chi-square?

number of subjects

measurement scale on which the data is measured

number of dependent variable measures

calculation convenience

ANOVA

t test

chi-square

Pearson's r

Explanation / Answer

(16) t-test. (since we would be doing a two sample t test)
(17) t-test. (since we would be doing a paired sample t test)
(18) Chi-square. (since we would be doing a test of independence)
(19) ANOVA. (since we would be comparing the treatment effects on 4 groups in this case)
(20) whether or not the population standard deviation is known.
(21) measurement scale on which the data is measured. (chi-square is for discrete data, mainly count data, and ANOVA is for continuous data mainly)

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