KIN 401: Lecture 1, Part 5

Lesson 1, Part 5: Making Numbers Meaningful Variation

Measures of Variation (1)

Measures of Variation (2)

The Range

When to Use the Range

Variance

What Does the Variance Formula Mean? (1)

What Does the Variance Formula Mean? (2)

What Does the Variance Formula Mean? (3)

Standard Deviation

Standard Deviation vs. Variance

Variance/SD of a Sample

Why N - 1?

SD of a Sample

Computational Formula Example

Variance vs. Standard Deviation

Interpretation of Standard Deviation

Percent of Values Within 1 Standard Deviation

Percent of Values Within 2 Standard Deviation

Percent of Values Within 3 Standard Deviation

Interquartile Range

Calculating the Interquartile Range for High Temperatures

Outliers

Outliers and Interquartile Range

Comparison of Range, Standard Deviation, and Interquartile Range

Coefficient of Variation (1)

Coefficient of Variation (2)

Coefficient of Variation (3)

Coefficient of Variation (4)

Coefficient of Variation (5)

Coefficient of Variation (6)

Relationship Between Measures and Shape of Distributions