Analysing household break-ins in Sydney
By using a Principle component analysis we can interpret the data more easily to find insightful patterns.
Initial Analysis
Electronics are highly correlated together.
Jewellery is highly correlated together.
PC Analysis
To find out how may principle components will be chosen, we can look at the scree plot.
The general rule is to identify the elbow point/ flattening point.
This would make component number 2.
Interpreting the Principle Components
Component score 1 is composed of electronics.
Component score 2 is composed of jewellery.
Scatterplot of PC’s
Penrith and Bankstown are correlated to have PC1 thefts (electronics).
Warringah and Ku-ring-gai are correlated to have PC2 thefts (jewellery).