Dec 16, 2014
Chi square
goodness of fit test uses sample data to test hypothesis about the shape or proportions of a population distribution. Is used when questionnaires are asked about frequencies.
Null hypotheses- No preference/ no difference directional- more or less than we expected to find.
P= expected frequency (predicted amount from null hypothesis)
N= is sample
Chi squared= Fo (observed) – Fe (expected)2 divided by Fe
