A ______ of a discrete quantitative variable is a graphical depiction of the number or proportion of scores in a set having a specific value of a variable.
a. scatter plot
b. histogram
c. frequency table
d. descriptive statistic
Ans: B
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A random sample of 1,200 can give results that are ____ accurate
a. 85% b. 90% c. 95% d. 99%
The generalization gradient for S+/S- discrimination learning in Exercise 44 peaked at a ________ point than the tone-on S+ gradient (Exercise 40) did and was displaced to the __________ of the peak for that gradient. This displacement demonstrated __________.
a. higher; left; peak shift b. higher; right; behavioral contrast c. lower; left; peak shift d. lower; right, behavioral contrast
Cannabis tends to produce
a. awesome feelings of euphoria with a mystical sense of "oneness" with the human race. b. an elated and energetic feeling with increased alertness. c. impaired cognitive functioning and perceptual-motor coordination. d. all of these.
The onset of the production of sperm cells in males, which occurs at a little over 14 years of age, is called __________.
A. the climacteric B. semenarche C. menarche D. spermarche