The mean of 9 observations in a data set is 20. What will the new mean if another observation
30 is added to this data set?
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The mean of 9 observations in a data set is 20. What will the new mean if another observation
30 is added to this data set?
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Step-by-step explanation:
if 30 is added the total observation will be 10
so the new mean will be 20+30/10 = 50/10= 5
Answer:21Step-by-step explanation:sum = mean*no .of observations=9*20=180180+30=210mean = 210/1021