What must be true about the expected values in a chi-square test

1. What are expected values in chi-square?
2. What must be true of expected values in chi-squared test?

What are expected values in chi-square?

The expected values specify what the values of each cell of the table would be if there was no association between the two variables. The formula for computing the expected values requires the sample size, the row totals, and the column totals.

What must be true of expected values in chi-squared test?

If all your observed frequencies equal the expected frequencies exactly, the chi-squared value for each cell equals zero, and the overall chi-squared statistic equals zero. Zero indicates your sample data exactly match what you'd expect if the null hypothesis is correct.