1. Business Statistics BU305 Chapter 3 Descriptive Stats: Numerical Methods

2. Chapter 3 Measures of Central Location (use ‘Salary’ file) Mean (average) Median (middle or 50 th percentile) Mode (most frequent) Compute using: Formula Function Tools

3. Chapter 3 Percentiles: (find the p th percentile) (use ‘Salary’ file) Use the formula: i = (p/100)*n (if i is NOT an integer, round up; if IT IS, average values in the i and i+1 positions) Use the function Use tools Compute Quartiles: Formula (same as above) Function Tools

4. Chapter 3 Measures of variability (use ‘Salary’ file) Range (Maximum minus Minimum) Interquartile Range (Q3 – Q1) Sample Variance Standard Deviation (SQRT of Variance) Compute using: Formula Function Tools

5. Chapter 3 Working with Grouped Data Weighted Mean Sample Mean for Grouped Data Sample Variance for Grouped Data Compute using: Formula