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Is my answer correct ?
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2 votes
Is my answer correct ?

Is my answer correct ?-example-1
User Yfpb
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3 votes
If I did do my math correctly, then it should be none of the above, however, I checked it with a standard deviation  calculator and you are wrong. Try the formula again.
User Trick
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mean = (21+6+18+21+20+14+19)/7 = 17

take sum of squares and fine their mean = 2199/7 = 314.1428

S.d =(314.1428-(17)^2)^(1/2)

= 5.01
User Guy Kahlon
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7.1k points
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