Homogeneity of Variance Tests For Two or More Groups

Mean score = 64. SD = 9. CV = 9 64 *100% = 14%. The z-score. The Z-score is the number of standard deviations a data value is from the mean. If a data point has a z score that is less than -3 or greater than +3, it is considered to be an extreme value. Where: X represents the data value. ................
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