In general, if ______ of the data is missing, then it is appropriate to use listwise deletion.
A. less than 10%
B. more than 10%
C. less than 50%
D. more than 50%
Ans: A
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In 1960, 72% of all adults were married; in 2008, ____ of all adults were married
a. 30% c. 52% b. 41% d. 63%
From conception through day 14 marks the ________ period of pregnancy.
A. postpartum B. fetal C. germinal D. embryonic E. gestation
A researcher is studying the incidence of child abuse in a particular city. She sends a questionnaire to 1,000 randomly selected students' homes. The questions ask how frequently parents engage in certain behaviors like hitting, criticizing, and punishing their children. Only less than 500 questionnaires are returned. Which of the following problems is evident in this scenario?
A. the problem of response B. the problem of refusal C. the problem of self-serving bias D. the problem of attentional bias
There is no evidence to suggest that child-to-child sex play causes any lasting negative consequences for later sexual development.
Answer the following statement true (T) or false (F)