Choosing and Applying the Appropriate Transformation (VCE SSCE General Mathematics): Flashcards
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Practise the cards
10 cards from this deck
Purpose of transformation in non-linear data
Purpose of transformation in non-linear data
To linearise the data for simpler modelling
Circle of transformations
Circle of transformations
Visual tool to choose transformation to linearise scatterplot
Types of transformations in the circle
Types of transformations in the circle
Squared, logarithmic, reciprocal
Circle of transformations limitation
Circle of transformations limitation
Only for consistently increasing or decreasing trends
Best transformation criterion
Best transformation criterion
Produces the best linear model
Residual plot purpose
Residual plot purpose
Shows how well transformed data fits linear pattern
Good residual plot characteristic
Good residual plot characteristic
Points randomly scattered around horizontal line at zero
(coefficient of determination) meaning
(coefficient of determination) meaning
Percentage of variation explained by the other variable
Better fit indicated by value
Better fit indicated by value
Higher values closer to 100%
Choosing between similar transformations
Choosing between similar transformations
Select the easiest to interpret in context