Hi, there is a question I can't work out:
The data in the following contingency table was used in investigation whether A and B are independent categories.
A1 A2 A3 A4
B1 53 39 64 24
B2 27 31 36 26
(i) Explain why the expected frequency in the cell (B1,A1) is 48.
(ii) Calculate the value of the X^2 statistic.