A device for facilitating the computation of the first four moments about the mean |
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| Authors: | John Lyman Pietro V Marchetti |
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| Institution: | (1) University of California at Los Angeles, USA;(2) University of Illinois, USA |
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| Abstract: | A mechanical device is described which materially reduces the time, labor, and probability of errors which are involved in the computation of certain moments about the mean. The use of the device is illustrated with the computation of the mean, standard deviation,g
1 as a measure of skewness, andg
2 as a measure of kurtosis of data from a given study.Grateful acknowledgment is made to the Holter Research Foundation of Helena, Montana for the grant-in-aid which made possible the development of this device. |
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