Question: Activity 0: Just notice these formulas! Expected count: [(row total)*(column total)] / sample size Residual = (observed count - expected count) Chi-square contribution: (observed count

Activity 0: Just notice these formulas! Expected count: [(row total)*(column total)] / sample size Residual = (observed count - expected count) Chi-square contribution: (observed count - expected count)2 / expected count Chi-square statistic: sum up all chi-square contributions df = (r-1)*(c-1), where r = the number of rows and c = the number of columns

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