91580 Statistics 3.8: Investigate time series data – 4 credits

Investigating time series data – any excuse to visit Black Beach

General Instructions

If you’re convinced time has started standing still ever since you started NCEA, this is the internal for you. In this Time Series internal you will draw a graph that shows change over time. Then you will be asked to find some equations and write a report. For example, you might look at how much money New Zealanders spend on recreational activities. You will look at three types of change that happens over time:

(1) How do things change within seasons? (e.g. more spending around Christmas time)
(2) How does change happen over the long-term? (e.g. people are spending more than they used to on average)
(3) Can we forecast what will change in the future?

This assessment is based on on the NZQA 91580 achievement standard (version 2) document.


Before taking Statistics 3.8, LearnCoach recommends you should have passed some Level 2 mathematics or statistics internals or externals. If you have not done this, some of the concepts in the internal may be unfamiliar to you and you may find it a challenge. 

If you've sat a similar standard in the past that has now expired, you cannot get the same credits a second time. Check the 'Exclusions List' to see recently updated standards.

Technology requirements:

You must use the Google Chrome browser. Free download here.
A desktop or laptop with a working camera and microphone.