Statisticsmedium · Past Paper
Find the mean of the first four perfect squares.
A7.5
B8.5
C10
D7
✓ Correct Answer: A — 7.5
Squares: 1, 4, 9, 16. Sum = 30. Mean = 30/4 = 7.5.
Share this question
More from Statistics
- What is the probability of drawing a Queen or a King from a deck of 52?
- If the sum of squares of deviations of 10 observations from their mean is 0, then:
- Find the missing frequency 'p' if the mean of the data (x: 5, 10, 15; f: 2, p, 3) is 10.5.
- The probability of solving a problem by student A is 1/2 and by B is 1/3. If both try, what is the probability that the problem is solved?
- Two cards are drawn from 52 cards without replacement. What is the probability both are Aces?