Home > Subjects > Mathematics > Level 3 - statistics and modelling > 3.1 Time series (AS90641) > Achievement criteria
- Subject: Mathematics
- AS: 90641
- Level: 3
- Credits: 3
- Internal
Statistics and modelling 3.1 Determine the trend for time series data
Achievement criteria
The level of achievement that you reach is decided by the questions that you answer correctly.
Achievement
- You determine the trend for time series data.
- This will most likely include:
- graphing
- smoothing with moving averages
- describing the trend in context using smoothed data. This may involve relating factors such as the gradient of the trend line to the situation.
Achievement with Merit
- You need to reach Achievement.
- You need to analyse time series data to make a forecast based on:
- estimates of the trend for the smoothed data
- estimates of seasonal effects.
- Analysis of cyclic effects is not expected.
Achievement with Excellence
- You need to reach Achievement with Merit.
- You report on the validity of the analysis.
- Your report will include justified comments on some of the following:
- relevance and usefulness of forecast
- features of the time series data
- appropriateness of the model
- improvements to the model
- limitations of the analysis
- seasonally adjusted data
- comparison with related time series data
- development and interpretation of an index number series.
