Practice30Create account

Find the mean deviation about the mean of 4, 7, 8, 9, 10, 12, 13, 17.

Competition practiceStatistics
  • A3.43
  • B0
  • C2.5
  • D3

Step-by-Step Solution

Mean . Absolute deviations: 6, 3, 2, 1, 0, 2, 3, 7, total 24. MD .
Answer: D) 3

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Statistics practice questions

More Statistics practice

Find the mean deviation about the median of 13, 17, 16, 14, 11, 13, 10, 16, 11, 18, 12,…Find the mean deviation about the median of 3, 9, 5, 3, 12, 10, 18, 4, 7, 19, 21.Find the standard deviation of 2, 4, 4, 4, 5, 5, 7, 9 (use n as the divisor).Find the variance of 5, 12, 3, 18, 6, 8, 2, 10 (use n as the divisor).For 5 observations, the mean is 4.4 and the variance is 8.24. Three of the observations…