A definition of a variable in terms of the activities a researcher uses to measure or manipulate it is a(n)

a. operational definition.
b. functional definition.
c. well-defined variable.
d. measure definition.


a

Psychology

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Which of the following refers to the set of distributions that, although symmetrical and bell-shaped, are not normally distributed?

a. Student's t distribution b. Gosset's t distribution c. The z distribution d. None of the above

Psychology

Systematic variance may consist of:

a. both experimental effects and confounding variables. b. experimental effects. c. confounding variables. d. experimenter effects.

Psychology

For a population with a standard deviation of ? = 10, what is the z-score corresponding to a score that is 5 points below the mean?

a. z = 0.50 c. z = –0.50 b. z = 1.00 d. z = –1.00

Psychology

Most of Thorndike's career was concerned with animal learning

a. True b. False

Psychology