Which of the following distribution curves demonstrates the least amount of variation in the scores?
a. The least amount of variation would be in the first curve.
b. The least amount of variation would be in the second curve.
c. The least amount of variation would be in the third curve.
d. The amount of variation can't be defined by the curve.
ANS: A
Kurtosis explains the degree of peakedness of the distribution curve, which is related to the spread of the variance of scores. An extremely peaked curve is referred to as leptokurtic, an intermediate degree of kurtosis as mesokurtic, and a relatively flat curve as platykurtic. The less peaked the curve, the more variation is present.
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