Statisticseasy · Past Paper
If the sum of 20 observations is 400, their mean is:
A10
B20
C40
D80
✓ Correct Answer: B — 20
Mean = Sum / N = 400 / 20 = 20.
Share this question
More from Statistics
- A data has mean 20. If 5 is added to each term, the coefficient of variation will:
- Find the mode of: 10, 12, 10, 15, 12, 10, 15.
- Find the mode of class 0-10 (f=5), 10-20 (f=10), 20-30 (f=5).
- In a word 'NEPAL', if a letter is chosen at random, what is the probability that it is a vowel?
- The median of the data 13, 15, 16, 17, 19, 20 is: