Chi squared goodness of fit tests

Question 1

what does a chi squared test do?

Answer 1

compares different levels of 1 variable

Question 2

what data must be used for chi^2 tests

Answer 2

nominal or categorical
used on unrelated data

Question 3

how to calculate chi^2 tests

Answer 3

no. of cases observed - no. of cases expected
square difference
divide by no. of cases expected

Question 4

what’s a contingency table

Answer 4

displays the observed frequencies of the variables being tested - used to calculate the chi^2 stat

Question 5

what are expected frequencies

Answer 5

frequencies that would be expected if the null hypothesis is true

Question 6

why is a larger sample size useful for chi^2

Answer 6

increases the ability to detect small effects