In a survey, statistical precision in estimating population parameters from sample statistics can be increased by
a. increasing sample size.
c. limiting the number of subjects surveyed.
b. increasing variability of data. d.
using a stricter confidence interval.
A
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Indicate whether the statement is true or false.
A high school student who is exhibiting signs of being depressed is most likely to be a
a. prepubescent African American male. b. postpubescent female. c. prepubescent white male. d. postpubescent African American male.
Children's involvement in sports has been shown to be related to which of the following?
a. Elevated self-confidence. b. Lower levels of academic performance. c. Less involvement with school. d. Increased probability of engaging in risky behavior.
Which example shows the most effective way to tell stories to young children?
a. Yvette uses different voices for the various characters in the books. b. Robert uses a steady, calm voice when reading a story. c. Beatrice says a story quickly to fit it into a time slot. d. Ives recites a story straight through without stopping to ask children questions.