Chi square test of independence (fx-570/991EX)

How to use the spreadsheet function in Casio fx-570/991EX (ClassWiz) calculator?
Obtain the expected values and test statistic of Chi-square test of independence using Casio fx-570EX calculator.
Obtain the expected values and test statistic of Chi-square test of independence using Casio fx-991X calculator.
Obtain the expected values and test statistic of Chi-square test of independence using Casio ClassWiz scientific calculator.

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