Math, asked by kumarabhishek98102, 6 hours 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 tanwarkanishka743

2

Answer:

21

Step-by-step explanation:

sum = mean*no. of observation

= 9*20 = 180

180+30 = 210

mean = 210/10

= 21

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