Question

Find out the mean and standard deviation of the following numbers : 34, 22, 43, 55, 87, 66, 46​

Answer 1

55 is the mean

of the data

Answer 2

Mean = Sum of all observation

━━━━━━━━━━━━━━━

Total no. of observation

Data is :- 34, 22, 43, 55, 87, 66, 46

Solution :-

Now,

Apply the formula

Mean = 34 + 22 + 43 + 55 + 87 + 66 + 46

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7

Mean = 353

════ = 50.42 Answer ✔

7