Mean of 45 observation is 22.if one is added to 1 st observation, 2 to 2nd , 3 to 3rd and so on then new mean is.
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this is a little bit different
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Mean of 48 observations = 22
sum of observations = 45 * 22 = 990
990 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 + 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 + 30 + 31 + 32 + 33 + 34 + 35 + 36 + 37 + 38 + 39 + 40 + 41 + 42 + 43 + 44 + 45 = 2025
New mean = 2025/45 = 45
aditya2102003:
but that is not 48
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