Statisticsmedium · Past Paper
What is the mean of first 10 multiples of 5?
A25
B27.5
C30
D50
✓ Correct Answer: B — 27.5
Multiples: 5, 10... 50. Mean = 5 * (1+2...+10)/10 = 5 * 5.5 = 27.5.
Share this question
More from Statistics
- Find the probability of getting a number between 1 and 6 (excluding 1 and 6) when a die is thrown.
- Two dice are thrown together. What is the probability that the sum of the numbers is 7?
- If the mean of 5 numbers is 10, what is the sum?
- Two people A and B throw a die. A wins if he throws a 6. If A starts, what is the probability that A wins on his first throw?
- A bag contains 5 red, 4 green, and 3 blue marbles. What is the probability of drawing a marble that is not red?