6. (15) A school psychologist wants to test the effectiveness of a new method of

Question

6. (15) A school psychologist wants to test the effectiveness of a new method of teaching music. She recruits 200 fifth-grade students and randomly divides them into two groups. Group 1 is taught means of the newmethod, while group 2 is taught by traditional methods. The same tea to teach both groups. At the end of the year, an achievement test is administered and the results of the two groups are compared. cher is assigned (a) (2) What is the response variable in this experiment? (b) (I) Is the response variable qualitative or quantitative? core 0f achirmen testguee Valia ble

Explanation / Answer

(a)

Response variable is the one which shows the effect which the treatment had on the group receiving it. In this case the response variable is the results achieved on the test.

(b)

Since results are measured using marks, so this makes it a quantitative variable.

(c)

Treatment is the new teaching methodology which is given to one of the groups.

(d)

The control group is the one which does not receive the treatment. So in this case it is the group which is taught using traditional methods.

(e)

This is an independent measures design, as both the groups receive different treatment conditions, randomly.

(f)

There are total 200 subjects in the study.

All the parts have been aswered correctly by you except part (e).

.In this study you conduct a one tailed z-test to assess the significance of the new teaching method.

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