A common measure of proportion of variance that is specifically used with a chi-square test for independence is ______.
A. the Pearson correlation coefficient
B. Cohen's d
C. Cramer's V
D. R2
Answer: C
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In which of Piaget’s stages of development do infants develop associations between sensations and actions?
a. The formal operations stage b. The preoperational stage c. The sensorimotor stage d. The concrete operations stage
Taking sexual orientation into account, __________ performed the best at mental rotation tasks.
A. heterosexual men B. homosexual men C. bisexual men and women D. homosexual women
What proportion of a normal distribution is located between the mean and z = -0.40?
A) ?0.6554 B) ?0.3446 C) ?0.1554 D) ?0.3108