The measure of central tendency that indicates the point below which half the scores fall is the:
a. standard deviation.
b. mean.
c. median.
d. mode.
e. Spearman rho.
C
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Answer the following statement true (T) or false (F)
When might the independent t-test be used?
A. One experimental condition and all participants used in that condition B. Two experimental conditions and all participants used in both conditions C. Two experimental conditions and different participants used in each condition D. None of the above
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Indicate whether the statement is true or false
Drugs that increase brain activity and other body functions are called:
A) stimulants B) depressants C) club drugs D) barbiturates