If every observation is increased by 5 then: (a) SD increases by 5 (b) MD increased by 5 (c) QD increases by 5 (d) None affected
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(c) part is the correct option
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Answer:
The mean is increased by 5 (option d).
Step-by-step explanation:
Question:
If each observation of the data is increased by 5, then their mean
a)remains the same
b)becomes 5 times the original mean
c)is decreased by 5
d)is increased by 5
Explanation:
Let there be n terms.
Increasing every term by 5 will increase their sum by 5n.
Increase in Mean= n/5n
= 5
It is increased by 5.
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