Measures of Central Tendency and Dispersion in Frequency Distributions

The frequency distribution below represents the weights in pounds of a sample of packages carried last month by a small airfreight company.

1. Compute the sample mean
2. Compute the sample mean using the coding method with 0 assigned to the fourth class
3. Repeat part (b) with 0 assigned to the sixth class
4. Explain why your answers in parts (b) and (c) are the same

Solution