Answers

2015-10-20T16:34:56+05:30
See the excel sheet for calculations of mean, deviation and (deviation)².


mean=25.5\\ \\\sum(x-x')^2 = 10412.5

variance= \frac{1}{N} \sum(x-x')^2= \frac{1}{50} \times 10412.5=208.25

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