Investigating the Association Between a Numerical and a Categorical Variable (VCE SSCE General Mathematics): Flashcards
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10 cards from this deck
Numerical variable
Numerical variable
Variable with numerical values that can be measured or counted
Categorical variable
Categorical variable
Variable with values that are categories or labels
Response variable in association study
Response variable in association study
The numerical variable being measured
Explanatory variable in association study
Explanatory variable in association study
Categorical variable that may explain differences in response
Measure of centre when comparing distributions
Measure of centre when comparing distributions
Median
Measure of spread when comparing distributions
Measure of spread when comparing distributions
IQR (Interquartile Range)
When to use parallel dot plots
When to use parallel dot plots
Small datasets (typically fewer than observations per group)
When to use parallel boxplots
When to use parallel boxplots
Larger datasets or when comparing two or more categories
When an association exists between variables
When an association exists between variables
When meaningful differences exist across categories
Four aspects compared using parallel boxplots
Four aspects compared using parallel boxplots
Shape, centre, spread, and outliers