IB skill practice

Calculate expected frequency

Calculate an expected cell count for a chi-square test.

Paper 1, Paper 2 5 marks Difficulty 4

Calculate expected frequency - exam scenario

Confirm the modelling meaning first. In a public transport unit contingency table, the row total is 70, the column total is 59, and the grand total is 190. Calculate the expected frequency for that cell. Enter the requested value and choose the interpretation that matches the result.

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