Formal Inference is a 4 credit Internal
In this standard you use your knowledge to find the size of the difference between two categorical groups using a technique called bootstrapping. In this stanard you will be expected to complete a report detailing your discoveries and use these to make an inference about the population from which the sample was taken.
The links below take you to NZQA's website and will provide more information about this topic
The standard
The clarification
Exemplar Task A - Elite athletes
Exemplar Task A Data - Elite Athletes
Exemplar Task B - New Zealand crash statistics
Exemplar Task B Data - New Zealand crash statistics
You will have used a computer program to draw your graphs. NZGrapher or INZight Lite