The mean of 9 observations is 5, each is added by (-3). The mean of 9 observations is 5 ,each observation is added by (-3) .What is the new mean ?how?
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Hi friend
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Your answer
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Mean of 9 observations = 5
Sum of the observations = (9 × 5) = 45
Each observation is added by (- 3).
Then,
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New mean = [ 45 - { 9 × (- 3)} ]/9
= (45 - 27)/9
= 18/9
= 2
HOPE IT HELPS
--------------
Your answer
-------------------
Mean of 9 observations = 5
Sum of the observations = (9 × 5) = 45
Each observation is added by (- 3).
Then,
----------
New mean = [ 45 - { 9 × (- 3)} ]/9
= (45 - 27)/9
= 18/9
= 2
HOPE IT HELPS
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