MCQ
If each observation of the data is increased by $3,$ then their mean:
- ABecomes $3$ times the original mean.
- ✓Is increased by $3.$
- CRemains the same.
- DIs decreased by $3.$
✓
Answer
Correct option: B.
Is increased by $3.$
Since mean is equal to the sum of all the values in the data set divided by the number of values in the data set.
So increase in the value of each observation will also increase the mean (average) by $3.$
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