Is my answer correct ?

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asked Sep 13, 2017 232k views

2 Answers

Trick · Answer 1 · 2017-09-15T23:44:06+0000

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.

Guy Kahlon · Answer 2 · 2017-09-18T02:09:59+0000

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

Is my answer correct ?

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