Statisticshard · Past Paper
The sum of deviations of 10 values from 20 is 5. What is the mean?
A20.5
B20
C25
D15
✓ Correct Answer: A — 20.5
Mean = Assumed Mean + $(\sum d / n) = 20 + 5/10 = 20.5$.
Share this question
More from Statistics
- What is the mode of 15, 20, 15, 30, 15, 40, 15?
- The mean of 5 numbers is 18. If one number is excluded, their mean becomes 16. The excluded number is:
- Find the mean of the first five prime numbers.
- In a frequency distribution, if the mid-values are 5, 15, 25, 35, 45, what is the class width?
- What is the coefficient of range for a data set with Max = 100 and Min = 20?