Use statistical methods to make a formal inference 4 credits Internal
USEFUL WEBSITES AND RESOURCES
Liz Sneddon's website - with videos
Key tips from Studyit:
- Revise skills used in Level 2.
- Learn how to select an unbiased sample using systematic, stratified, cluster, and simple random sampling.
- Know how to describe each sampling method in detail and the advantages and disadvantages of each method.
- Be able to find parameters such as mean, mode, median, range, interquartile range, and standard deviation.
- Be able to use your sample parameters to make estimates about the population.
- Remember: if your sample is representative, the parameters for your sample will be the same as those of the whole population.
- Acceptable measures of spread are standard deviation, variance, and inter-quartile range. Stating the range, or the value of the maximum and minimum, or the upper and lower quartile, is not sufficient.
- You are expected to use resampling methods for making formal inferences.
- Be able to locate the confidence interval formulae and quote them appropriately. You are not expected to derive these formulae but you should understand them and their application.