Question:medium

The mean of the following data \(21^2,22^2,\ldots,30^2\) is

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To find the mean: \[ \boxed{\text{Mean}=\frac{\text{Sum of all observations}}{\text{Number of observations}}.} \] Always count the number of observations carefully.
Updated On: Jul 15, 2026
  • 678.5
  • 668.5
  • 658.5
  • 648.5
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The Correct Option is C

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