Testing for normality Flashcards
1
Q
graphical procedures
A
- order and standardise data - tools, data, sort and find mean
- record the percentile of each value
- find the z scores for these percentiles
- plot x against Z. if the scatterplot is close to any normal distribution, the points with lie on a straight line. If it is close to a standard normal. the points will lie on X=Z`
2
Q
p value?
A
if it is less than 0.05 the data is not normal distribution