FRHD 3070 Lecture Notes - Lecture 11: Contingency Table, Regression Analysis, Statistical Inference
31 May 2018
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ANALYSIS OF QUANTITATIVE DATA
• Dealing with data
• Coding data
o Systematically reorganizing raw numerical data into a format that is easy to
analyze using computers
• Entering data
o code sheet
o direct entry method
o optical scan
o bar code
• Cleaning data
o Verifying the accuracy of coding
▪ 2 ways to clean data
• possible code cleaning
o or wild code checking
▪ checking the categories of all variables for
impossible codes
• contingency cleaning
o or consistency checking
▪ cross classifying 2 variables
▪ looking for logically impossible combinations
• results with one variable
o frequency distributions
o measures of central tendency
▪ mean
• sum of all scores divided by the total number of scores
▪ median
• organize scores from high to low then count to the middle
▪ mode
• most frequent or common score
o measures of variation
▪ range
▪ percentiles
▪ standard deviation
• results with two variables
o bivariate relationship
▪ seeing the relationship
• scattergram
o how to construct
o what you can learn
▪ form
• independent
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