Numerical Measures of Central Tendency and Variability
Median and Mean
Answers
- This is a definition of the median.
- This is a definition of the mean
- This is a definition of the mean.
- The mean and the median are only the same when a distribution is symmetric. The mean and median are different when the distribution is skewed.
- 15: The median minimizes the absolute deviations. To find the median, order the numbers from smallest to largest, and then find the middle number.
- The mean minimizes the squared deviations. To find the mean, find the sum of the values (140) and divide by number of values in your data set (5).
- The mean (in this case, 6.5) is the point at which a distribution balances.