Statisticseasy · Past Paper
Determine the median of the following observations: 25, 30, 21, 15, 28, 35, 40, 12, 18.
A21
B25
C28
D30
✓ Correct Answer: B — 25
Arranging in ascending order: 12, 15, 18, 21, 25, 28, 30, 35, 40. The middle value (5th position) is 25.
Share this question
More from Statistics
- The mean of 20 observations is 15. On checking, it was found that two observations 20 and 15 were miscopied as 3 and 32. The correct mean is:
- What is the mode of the following numbers: 2, 3, 3, 4, 5, 3, 2, 1?
- The median of first 7 prime numbers is:
- The mean age of a group of 100 people was 30. Later it was discovered that age 45 was misread as 25. The correct mean is:
- What is the sum of probabilities of all possible elementary events of an experiment?