If $\overline{x}$ is the mean of $n$ observations $x_1,x_2,\dots ,x_n$ then the mean of the absolute deviations of these observations from $\overline{x}$ is

• A

  the variance of the data
• B

  the mean proportion of the data
• C

  the standard deviation of the data
• Correct answer
  D

  the mean deviation of the data

Hence, the correct answer is option: 'D'.