Descriptive Statisticshard
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A frequency distribution table shows:\n\n| Value | 10 | 20 | 30 | 40 |\n|-------|----|----|----|----|\n| Frequency | 4 | 12 | 10 | 4 |\n\nCalculate the variance of this distribution.
A frequency distribution table shows:\n\n| Value | 10 | 20 | 30 | 40 |\n|-------|----|----|----|----|\n| Frequency | 4 | 12 | 10 | 4 |\n\nCalculate the variance of this distribution.