macipope
macipope
08-11-2016
Mathematics
contestada
Is my answer correct ?
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diamond03
diamond03
08-11-2016
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
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Sora0115
Sora0115
08-11-2016
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.
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