# Calculating Chi-Squared

$2 \times 2$ Contingency Table The following shows the results of a survey of a sample of $200$ randomly chosen adults classified according to gender and sport. These are called observed values or observed frequencies.  \begin{array}{|c|c|c|c|} \hline & \text{loves sport} & \text{hates sport} & \text{sum} \\ \hline \text{male} & 72 […]