Math, asked by anugeorge5641, 11 months ago

The mean of two groups of 15 and 20 observations are 20 and 25 respectively . Find the mean of all 35 observations.

Answers

Answered by kunal221922
6

Answer:

22.8

Step-by-step explanation:

sum of 15 observations 300

sum of 20 observations 500

total sum 800

mean of 35 observations 800/35

=22.8

Answered by muskangupta13021
1

Answer:

Hope it Helps. Please mark as brainliest.

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