SOCI 217 Lecture Notes - Lecture 18: Multivariate Analysis, Characteristic Subgroup, Standard Deviation

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2 Jun 2018
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Week 10- quantitative analysis
Standard deviation
If the mean score of midterm 2 is 73 and the standard deviation is 7%. What grade
range would you expect?
o 68%
1 standard deviation
73 +/- 7
o 95%
2 standard deviation
73 +/- 14
o 99%
3 standard deviation
73 +/- 21
smaller deviation is a better measure of a sample characteristic
subgroup comparisons
often, it’s appropriate to describe subsets of cases, subjects or respondents
combining different variables to explain
bivariate analysis
1. Cases are divided into groups according to attributes of independent variable
2. Subgroups then described by attributes of dependent variable
3. Compare independent variable subgroups with one another according to given
attribute of dependent variable
reading crosstabs for bivariate analysis
contingency tables
1. Determine IV and DV for your analysis
o IV down on column and DV on row
2. Table should be percentage according to the IV
o percentage down the table
o must be added to 100
3. Read table by comparing IV subgroups with one another in terms of the same
category of the DV
o interpret across about every row
o then one statement to conclude
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