CHAPTER 4 DATA SET 2

No Intervention

18

16

17

15

16

14

22

21

7

24

23

19

12

20

23

Intervention

17

15

21

24

12

16

14

25

19

24

21

25

9

9

13

A t-test is used to calculate whether two groups are the same or statistically different

from another. This is done by comparing the means of two groups. While there are a

couple of different types of t-tests depending on the relationship between the data, for

this exercise you will use the independent-sample t-test to determine whether two

groups are different.

Use the "Chapter 4 Data set 2" sample data from the image above. Calculate an

independent samples t-test to compare the data from the two conditions. Regardless of

whether you do this by hand or in Excel, report the t-test statistic, and determine

whether this value is statistically significant (table B2, one-tailed, alpha 0.05). Be sure to

submit a file showing your calculations.