The mean of 100 numbers observations is 50 and their standards | Filo
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Class 11

Math

JEE Main Questions

Statistics

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The mean of 100 numbers observations is 50 and their standards deviation is 5. The sum of all squares of all the observations is (a)50,000          (b) 250,000         (c) 252500         (d) 255000

Solution: Solution: Here, Mean,
Standard deviation,
Variance

Here,




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