Stepwise Approach to Statistical Analysis

Continuing from the previous video, Prof. Mary Ferrill illustrates the idea of assessing the statistical analysis by a power example.

Pay attention to the power criteria.

We can learn an approach to statistical analysis, including assessing the study design, determining the data types, and investigating the number of groups evaluated.

Besides, for data types, there are four major types: interval, ratio, ordinal, and nominal.

Many students will be curious and ask, what is the difference between interval and ratio?

Ratio is just an absolute zero. However, all you need to know is whether it is a continuous scale, and that is listed as interval/ratio data.