A researcher is studying the amount of sleep college students get each night. She notices that there is a lot of variability in the data, with some students typically sleeping for around 8 hours a night and some sleeping around 5 hours a night
One way to measure how spread out the data scores are is to use:
a. the arithmetic mean.
b. meta-analysis.
c. inferential statistics.
d. the standard deviation.
Answer: d
Psychology
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Sisters Hillary and Jennica are taller and heavier than their mother was at their age. This is an example of
A) a generative effect. B) malocclusion. C) a secular trend. D) evolutionary adaptation.
Psychology
Early medical records of SIDS babies reveal
A) a family history of chromosomal abnormalities. B) higher rates of prematurity and low birth weight, poor Apgar scores, and limp muscle tone. C) they were born after their due date and had higher-than-average birth weights. D) they often cried or whimpered in their sleep.
Psychology