Math, asked by nisargshah956, 4 months ago

The mean of first 5 observations is 20 and the mean of last 5

observations is 45. What is mean of all 10 observations?

Answers

Answered by Anonymous

3

Answer:

32.5

Step-by-step explanation:

Mean of first 5 observations = 20

Total sum of first 5 observations=20*5=100

Mean of last five observations =45

Total sum of last five observations=45*5= 225

So,

Total sum of all ten observations = 100+225=325

Mean of ten observations =325/10=32.5

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