Statisticsmedium · Past Paper
Calculate the mean of the squares of the first three natural numbers.
A4
B4.66
C5
D14
✓ Correct Answer: B — 4.66
Squares: 1, 4, 9. Sum = 14. Mean = 14/3 = 4.66...
Share this question
More from Statistics
- If the coefficient of range is 0.25 and the sum of max and min is 100, find the range.
- The median of 10, 14, 15, 17, 21, 24 is:
- If P(A) = 0.5, P(B) = 0.4 and events are mutually exclusive, find P(not A and not B).
- In the formula for median of grouped data $L + \frac{\frac{N}{2} - cf}{f} \times h$, what does 'cf' represent?
- The sum of the deviations of a set of values from their arithmetic mean is always: