8 The mean of first 5 observations is 20 and the mean of last 5
observations is 45. What is mean of all 10 observations?
give me proper answer no spAm
observations is 45. What is mean of all 10 observations?
give me proper answer no spAm
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Answer:
32.5
Step-by-step explanation:
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Answer:
Given Mean of 10 observations is 20
⟹Sum of 10 observations is S=20×10=200
If each observation is added by 5 Then sum of observations is added by 5×10=50
⟹S
′
=200+50=250
Mean of new observation is
10
S
′
=
10
250
=25