Lecture 6: Central Tendency: Mean, Median, Mode

Lecture 7: Properties of the Mean and Median

1. Sum of Deviations from the Mean totals zero.

2. Sum of Squared Deviations from the Mean is smaller than for any other number.

3. Sum of the Absolute Deviations from the Median is smaller than for any number.

4. Comparing the Median and Mean in various Distributions: When to use each.