Data analysis-idependent and dependent variables

Reference no: EM1397596

A researcher looks at the effect of 3 different drugs on 3 different groups of 10 people. Numbers refer to stress levels, with lower numbers being lower stress.

Drug 1

Before After

25 18

23 20

27 19

27 22

21 17

30 18

22 15

20 19

25 17

29 20

Drug 2

Before After

26 24

21 23

20 19

22 17

18 14

27 21

20 22

21 23

21 18

18 17

Drug 3

Before After

23 15

19 15

21 22

18 15

22 18

23 16

22 21

18 17

17 14

19 16

a) What type of experimental design is being used? What is (are) the independent and dependent variable(s)? How many levels are there of each?

b) Analyze the data. Are there significant differences between the 3 drugs?

c) Provide a summary table and report results.

Reference no: EM1397596

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