Statisticshard · Past Paper
In a grouped frequency distribution, if the median class is 20-30, L=20, N=40, cf=15, f=10, h=10, the median is:
A25
B22.5
C27.5
D30
✓ Correct Answer: A — 25
Median = 20 + [(20 - 15)/10] * 10 = 20 + 5 = 25.
Share this question
More from Statistics
- The mode of 12, 11, 15, 12, 14, 11, 12, 10, 15 is:
- If the ratio of mode and median of a distribution is 6:5, then the ratio of mean and median is:
- If the mean of $a, b, c, d, e$ is 28, and the mean of $a, c, e$ is 24, what is the mean of $b, d$?
- If the mean of 1, 2, 3... n is 6, what is n?
- If mode = 80 and mean = 110, then median is: