Scatterplots (VCE SSCE General Mathematics): Flashcards
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Practise the cards
10 cards from this deck
Bivariate data
Bivariate data
Data involving two variables
Explanatory variable (EV)
Explanatory variable (EV)
Variable used to explain/predict the other
Response variable (RV)
Response variable (RV)
Variable that changes in response to the EV
Alternative names for EV and RV
Alternative names for EV and RV
EV = IV (independent), RV = DV (dependent)
Scatterplot
Scatterplot
Graph showing bivariate data when both variables are numerical
Axis placement: EV and RV on scatterplot
Axis placement: EV and RV on scatterplot
EV on x-axis (horizontal), RV on y-axis (vertical)
Each point on a scatterplot represents
Each point on a scatterplot represents
One case (e.g., one person, one car, one day)
When to use scatterplots
When to use scatterplots
When both variables are numerical
Identifying EV vs RV
Identifying EV vs RV
Ask: Which variable predicts/explains the other?
Key question in bivariate data analysis
Key question in bivariate data analysis
Can one variable help predict/understand the other?