Approach to which statistical test to use:
This algorithm is in my revision notes
1. Is type of variable- i.e continuous,discrete
2. Is the continuous or discrete variable normally distributed or not
3. How many samples in the para or non parametric variable? One, two or
more?
4. If two samples, are they independent or paired/matched?
4. If two samples, are they independent or paired/matched?
Make sure the assumptions of
the test are not violated
Parametric
- the distribution of scores in a population is normal & variance equal and when the sample size is large.
Nonparametric
- the distribution of scores in a population is not
normal or if the sample size is small- the distribution of scores in a population is normal & variance equal and when the sample size is large.
Nonparametric
The following is the snap capture of my notes
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