The mean of 15 observation is 16 if each observation is decreased by 25,%what will be the new mean
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sum of observations / no .of observations = mean
sum / 15 = 16
sum of observations = 240
decrease = 240 * 25/100
= 60
mean = 60/15
mean =4
sum / 15 = 16
sum of observations = 240
decrease = 240 * 25/100
= 60
mean = 60/15
mean =4
christina6:
sorry the answer is wrong today i found out it was 12
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