MATH 1P98 Lecture Notes - Lecture 2: Upper Class, Frequency Distribution

• School: Brock University
• Department: Mathematics and Statistics
• Course: MATH 1P98
• Professor: TBA

Document Summary

Proportion the ratio of the following type: # of objects with desired property / total # of objects. The proportion of diamonds in a deck of cards ------ 13/52 = = 0. 25 = 25% *can also express proportion as a percentage. Percentage of red cards in a deck is 26/52 x100 = 0. 5 = 50% Suppose we want to buy a used 1p98 textbook. *create a frequency table organize the data to get an idea of the distribution. A frequency distribution consists of several classes; along with a frequency of each class. The lower class limits (lcl) are the smallest numbers of a class. The upper class limits (ucl) are the largest. Class width is the size of the interval (difference of lcls) ** to nd class width, use formula: Max data value min data value / # of classes. Class boundaries are the numbers that separate the classes *midpoint of the ucl and lcl*