Home > Subjects > Mathematics > Level 3 - statistics and modelling > 3.2 Confidence intervals (AS90642) > Achievement criteria
- Subject: Mathematics
- AS: 90642
- Level: 3
- Credits: 3
- External
Statistics and modelling 3.2 Calculate confidence intervals for population parameters
Achievement criteria
The level of achievement that you reach is decided by the questions that you answer correctly.
Achievement
- You calculate confidence intervals for population parameters from large samples. Population parameters will be selected from:
- mean
- proportion
- differences between two means.
Achievement with Merit
- You need to reach Achievement.
- You demonstrate an understanding of confidence intervals, which will include some of:
- interpreting confidence intervals
- justifying or refuting claims about a population parameter
- calculating the sample size required to meet a pre-specified precision
- estimating population totals.
Achievement with Excellence
- You need to reach Achievement with Merit.
- You demonstrate an understanding of the theory behind confidence intervals, which may involve:
- effect of changing parameters on the precision or standard error
- applications of the Central Limit Theorem
- distribution of sample means
- distribution of sample totals
- use of probability including normal distribution.
