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From Karnataka Open Educational Resources
Activity- statistics problems (view source)
Revision as of 06:48, 13 August 2014
, 06:48, 13 August 2014→Solution:
|Σfx²=10710
|Σfx²=10710
|}
|}
σ=<math>\sqrt{\frac {\sum {fx^2}}{n}-({\frac{\sum fx}{n})^2}}</math> <br>
σ=<math>\sqrt{\frac{10700}{50}-({\frac{660}{50})^2}}</math> <br>
σ=<math>\sqrt{\frac{1530}{10}-{144}}</math> <br>
σ=<math>\sqrt{153-144}</math> <br>
σ=<math>\sqrt{9}</math> <br>
σ=3
