Using StatCrunch calculate the chisquare statistic and degre

Using StatCrunch, calculate the chi-square statistic and degrees of freedom for the following set of data for 300 people:

                                                            Group A          Group B          Group C          Total

                        Had flu shot                     20                   30                    32                   82

                        Didn

Solution

Group A   Group B   Group C   Total   Had flu shot Observed   20 30 32 82 Expected   27.33 27.33 27.33 82.00 (O - E)