analysing categorical data

Question 1

what does the goodness of fit test test for

Answer 1

the degree to which obtained results match predicted ones

Question 2

what test is used for two categories

Answer 2

BInominal test

Question 3

what test is used for more than two categories

Answer 3

chi-squared test (MULTInominal test)

Question 4

define strength of association

Answer 4

the degree to which one variable affects another

Question 5

is all counts are >5 in two categories what test is used

Answer 5

chi-squared

Question 6

is all counts are <5 in two categories what test is used

Answer 6

fishers exact test

Question 7

how is categorical data expressed, considering it is counted and not ‘measured’

Answer 7

it is expressed as a proportion

Question 8

how are the degrees of freedom decided

Answer 8

number of categories -1

Question 9

what is a contingency table used for

Answer 9

express the frequency of various

Question 10

how are degrees of freedom decided in a contingency table

Answer 10

(no. of rows -1) x (no. of columns)