QMS 102 Lecture Notes - Frequency Distribution, Cumulative Frequency Analysis, Ogive

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 102
• Professor: Armand Gervais

Document Summary

Notation for indicating classes: in this text, and under is used. You may choose to use to , say, 0 to: you may use 0-5 or 0~5 . Unless one has a special reason for doing so, o/w, it is best that the class width be an easy number to work with. 1, 2, 2. 5 (if the data has at least one decimal) 0. 1, 0. 2, 0. 25 (if the data has at least 2 decimals) Note: in this course, when you are asked to construct a frequency distribution, all classes must have the same class width. 1)they should look like the data; i. e. , have the same number of decimal places as the original data. 2)each boundary should be a multiple of the class width. 3)there must be no gaps between classes; i. e. , the upper boundary of one class =the lower boundary of the next class.