Statistics & Research Methods [NTA-NET (UGC-NET) Psychology (04)]: Questions 1 - 3 of 318

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Question 1

Question MCQ▾

A researcher wants to consider the effects of preparation on standardized test scores. She plans to compare the GRE scores of students who did and did not take a preparation course for the GRE. She also plans to compare the GRE scores of students who took preparation courses though Company X, Company Y, and Company Z.

The researchers found that students who took a preparation course with Companies X and Y scored higher on the GRE than students who did not prepare. But students who took a preparation course with Company Z scored no higher on average than students who did not take a preparation course. These results are an example of

Choices

Choice (4)Response

a.

an interaction effect

b.

a zero correlation

c.

a flat effect

d.

a negative correlation

Edit

Question 2

Question MCQ▾

Statistics are used in psychological research to ________.

Choices

Choice (4)Response

a.

Justify the experimenter՚s conclusions.

b.

Prove that the research hypothesis is correct.

c.

Quantify the dependent variable.

d.

Evaluate the likelihood that the experiment caused the differences in behavior across treatment conditions.

Edit

Question 3

Question MCQ▾

The amount of variance in scores accounted for by a correlation coefficient of -0.70 is

Choices

Choice (4)Response

a.

14% if the reliability of the measures is greater than . 70

b.

almost 50% if the reliability of the measures is + 1.00

c.

less than zero because the correlation is negative

d.

70% if the reliability of the measures is + 1.00

Edit