Sociology 2205A/B Lecture 2: Week 3 (Ch 3)
1 Feb 2017
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Basic descriptive statistics: percentages, ratios and rates, tables, charts, and graphs. Nominal to ordinal to interval/ratio: variables measured at the ordinal level are limited to one mathematical operation. Ranking cases as higher or lower, more or less. All cases following this symbol should be added. X1, x2 = chronological arrangement of individual scores. Xi = all of the scores associated with a given variable. The summation of all the scores associated with a given variable. 2 = means to multiply x1 by itself. 1 means find the square root of x1. 2 means square each score and then add together ( xi)2 means add all the scores together and then square it. Example: below are the ages of my siblings: 10, 12, 18, 23, 27, 30 what is: This refers to the order in which calculations in an equation should occur bedmas. Always use as many decimal places as your calculator can handle. Round final answer to 2 decimal places.
