A correlation is considered to be zero if _____.
a) there is no connection between the variables
b) one variable increases while the other decreases
c) both variables increase
d) both variables decrease
a) there is no connection between the variables
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Which of the following is a measure of weight that controls for variations in height and is widely used in research on obesity?
a. set point b. reaction range c. body mass index d. obesity quotient
A distribution can have more than one _____ but can have only one _____
a. median; mode or mean b. mean; mode or median c. mode; median or mean d. median or mode; mean
The DSM-5 makes clear mild impairment of cognitive functioning is not at all related to neurodegenerative diseases like Alzheimer's disease.
a. true b. false
In direct observations, an alternative to rating scales can be used in which the frequency of specific behaviors are counted. This is called a
a. personality questionnaire. b. behavioral assessment. c. projective test. d. structured interview.