BIOL 243 Lecture Notes - Lecture 3: Dermatitis, Marginal Distribution, Asthma

• School: Queen's University
• Department: Biology
• Course: BIOL 243
• Professor: Christopher G Eckert

Document Summary

Looks at the effect of one category. Start with raw data and convert into percentages: percentages are looked in columns or rows, conditional distribution total will always be 100% with respect to being the column or row. Columns: if you are looking at a column, you will divide the column cells by the column total. If you are looking at the column, the conditional distribution total is 100% The marginal distribution will be the opposite (row) total divided by the tables total. 1030 1030/1030= 100: if you are looking at a row, you will divide the row cells by the row total. If you are looking at the row, the conditional distribution total is 100% The marginal distribution will be the opposite (column) total divided by the tables total. Proportion: count in cell divided by marginal total. Only looks are column or row, sum is always 100%