CALCULATING STANDARD DEVIATION WORKSHEET

Deviation method for calculating standard deviation . Consider the observations 8,25,7,5,8,3,10,12,9. First, calculate the mean and determine N. Remember, the mean is the sum of scores divided by N where N is the number of scores. Therefore, the mean = (8+25+7+5+8+3+10+12+9) / 9 or 9.67 . Then, calculate the standard deviation as illustrated below. ................
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