Reference no: EM133076420

QUESTION 1

An educational psychologist wanted to know the effects of four different methods of teaching arithmetic. Using 12 classrooms, each method was used in the classes. At the end of the school year, all the pupils took the same achievement test, and the means for groups receiving different methods were compared. Answer the following questions about the study.

a. What was the dependent variable?

b. What was the independent variable?

c. What was a controlled variable?

d. Give an example of a parameter.

QUESTION 2

Epstein compared "feelings of fear and anxiety" of experienced parachutists (more than 100 jumps) to those of novices (fewer than 10 jumps). Feelings were measured on a questionnaire with scores from 1 (calm) to 10 (very nervous). The subjects were all men in their 20s. Identify:

a. the dependent variable

b. the independent variable, and the names of the levels

c. a controlled extraneous variable

d. a quantitative variable

e. a categorical variable

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Attachment:- Correlation and Regression.rar