Question

find the mean of the question
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Answer 1

Step-by-step explanation:

$mean = \frac{sum \: of \: terms}{number \: of \: terms}$

=> 2 + 3 + 4 + 5 + 6 + 10 + 12 + 21 + 25 = 89

=>

$\frac{89}{11}$

Answer 2

Solution:

Mean = A + (∑fd/n) * h

= 21 + (-83/20) * 1

= 21 + (-4.15) * 1

= 21 + (-4.15)

= 16.85 ≈ 17

See the picture data below.

Hope this will be helpful to you.