The mean is used most often in behavioral research because researchers tend to
a. measure variables that have interval or ratio scores, and the scores form approximately normal distributions.
b. conduct research in which the mathematical center of a distribution is required.
c. conduct research in which only the most frequently occurring score is needed.
d. measure variables that have interval or ratio scores, and the scores usually do not form a normal distribution.
A
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What will be an ideal response?
A frequency distribution graph represents frequencies with vertical bars without space between them. What scale of measurement was used to measure the scores?
a. Nominal c. Nominal or ordinal b. Ordinal d. Interval or ratio
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a. instinct b. evolutionary c. learning d. sociocultural
Which reflex weakens by two months and disappears by five months?
a. sucking b. stepping c. rooting d. Babinski