7. The mean of 15 observations is 32. Fnd the resulting mean, if each observation is ) increased by 3 (ii) decreased by 7
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0
Answer:
Mean of 15 observations =32
Sum of 15 observations =32×15=480
Every observation is increased by 3
New sum =480+3×15=525
Mean =
15
525
=35
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Answered by
0
Answer:
Step-by-step explanation:
Mean of 15 observations =32
Sum of 15 observations =32×15=480
Every observation is increased by 3
New sum =480+3×15=525
Mean =525/15
=35
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