QMS 102 Study Guide - Midterm Guide: Percentile, Quartile, Histogram

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 102
• Professor: Gunawardena Egodawatte

Document Summary

At least 1 leaf must be associated with both the 1st and last stems. Stem values should be consecutive or repeated (2x or 5x) Stem units must be indicated if it is not 1. When stems are repeated twice, 0-4 go to the first and 5-9 go to the second. When they are repeated 5 times, 0-1, 2-3, 4-5, 6-7, 8-9. Leaves ascend in value when positive and descend when negative. Frequency distribution (2 columns - grouped data and frequency): 5-10 classes using and under e. g. 10 and under 20 . No open-ended classes e. g. 100 and over. Estimated class width = (upper class boundary lower class boundary)/5. All classes have the same width; no gaps between classes. Classes should have the same # of decimal places. Nice numbers for class widths are 1, 2, 2. 5, 5, and multiples of 10 or 100 of nice numbers. Vertical axis = class frequencies, relative frequencies or percentages.