Asked by Jay

What is the stardard deviation using the rull of thumb for each set of numbers: 57,61,57,57,58,57,61
61,52,69,64,46,554,47
Answered by Edward
132.8460441

Provided your 554 is correct.
Answered by PsyDAG
Rule of Thumb

Range/4 = approx. SD

You can do the calculations.
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