platykurticadj.

Brit.

/ˌplatᵻˈkəːtɪk/, U.S.

/ˌplædiˈkərdɪk/

Origin: A borrowing from Greek, combined with English elements. Etymons: platy- comb. form, Greek κυρτός , -ic suffix.

Etymology: < platy- comb. form + ancient Greek κυρτός bulging (see kurtosis n.) + -ic suffix. Compare platykurtosis n.

Statistics.

Of a frequency distribution or its graphical representation: having less kurtosis than the normal distribution (i.e. having or indicating a greater spread of distribution either side of the median).

ΘΚΠ

the world > relative properties > number > probability or statistics > [adjective] > relating to distribution > measure of peakedness

leptokurtic1905

mesokurtic1905

platykurtic1905

1905 K. Pearson in Biometrika 4 173 Given two frequency distributions which have the same variability as measured by the standard deviation, they may be relatively more or less flat-topped than the normal curve. If more flat-topped I term them platykurtic, if less flat-topped leptokurtic, and if equally flat-topped mesokurtic.

1952 W. L. Gore Statistical Methods for Chem. Exper. ii. 16 The kurtosis of a normal distribution is equal to 3; smaller values than 3 indicate a flatter distribution than the normal (a platykurtic distribution).

1966 S. Beer Decision & Control xiii. 334 Moreover, the distributions may be either leptokurtic or platykurtic—that is, either too peaked or too flattened to be Gaussian.

1998 Amer. Naturalist 152 490/2 Models of population spread that allow for dispersal curves with tails longer (or ‘fatter’, i.e., more platykurtic) than those of a normal curve show more rapid spread.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	platykurtic
释义	platykurticadj. Brit. /ˌplatᵻˈkəːtɪk/, U.S. /ˌplædiˈkərdɪk/ Origin: A borrowing from Greek, combined with English elements. Etymons: platy- comb. form, Greek κυρτός , -ic suffix. Etymology: < platy- comb. form + ancient Greek κυρτός bulging (see kurtosis n.) + -ic suffix. Compare platykurtosis n. Statistics. Of a frequency distribution or its graphical representation: having less kurtosis than the normal distribution (i.e. having or indicating a greater spread of distribution either side of the median). ΘΚΠ the world > relative properties > number > probability or statistics > [adjective] > relating to distribution > measure of peakedness leptokurtic1905 mesokurtic1905 platykurtic1905 1905 K. Pearson in Biometrika 4 173 Given two frequency distributions which have the same variability as measured by the standard deviation, they may be relatively more or less flat-topped than the normal curve. If more flat-topped I term them platykurtic, if less flat-topped leptokurtic, and if equally flat-topped mesokurtic. 1952 W. L. Gore Statistical Methods for Chem. Exper. ii. 16 The kurtosis of a normal distribution is equal to 3; smaller values than 3 indicate a flatter distribution than the normal (a platykurtic distribution). 1966 S. Beer Decision & Control xiii. 334 Moreover, the distributions may be either leptokurtic or platykurtic—that is, either too peaked or too flattened to be Gaussian. 1998 Amer. Naturalist 152 490/2 Models of population spread that allow for dispersal curves with tails longer (or ‘fatter’, i.e., more platykurtic) than those of a normal curve show more rapid spread. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.1905
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