Math, asked by aaravraj84, 11 months ago

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?

Answers

Answered by vuma232006

16

Answer:

21

Step-by-step explanation:

sum = mean*no .of observations

=9*20=180

180+30=210

mean = 210/10

21

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