The scores of English examination(out of 40) of 15 students is as follows:
25, 32, 35, 23, 28, 27, 26, 25, 24, 40, 21, 38, 35, 39, 32
Find the arithmetic mean of this data.
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Sum :
= 25 + 32 + 35 + 23 + 28 + 27 + 26 + 25 + 24 + 40 + 21 + 38 + 35 + 39 + 32
= 450
Total no. = 15
Mean :
= Sum of observations
Total no. of observations
= 450
15
= 30
Answer : 30
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