52. The mean
of a certain number of
observations is 35. What is the new value of
the mean if each observation is :
(i) increased by 7. (ii) decreased by 5.
(iii) multiplied by 2. (iv) divided by 5.
(v) increased by 20%.
(vi) decreased by 30%.
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Answered by
2
Answer:
answer= multiplied by 2
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Answered by
6
Answer:
(i) increased by 7
= observed mean = 35
= if increased by 7
resulting mean = 35+7=42
(2) decreased by 5
=observed mean = 35
=if decreased by 5
resulting mean = 35-5 = 30
(3) multiplied by 2
=observed mean = 35
= multiplied by 2
resulting mean = 35×2=70
(4)divided by 5
= observed mean = 35
= divided by 5
resulting mean = 35÷5 = 7
(5) increased by 20%
= observed mean = 35
= increased by 20%
resulting mean = 35+20÷100=7
(6) decreased by 30%
=observed mean = 35
=decreased by 30%
resulting mean = 35-30÷100=7-3÷2 =4÷2=2
Step-by-step explanation:
hope it's correct and it will help you
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