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Further Statistics
Quick questions on Chi-squared tests: goodness of fit and contingency tables - Edexcel A-Level Further Maths
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are small expected frequencies?Show answer
Merge classes so every expected frequency is at least , then recount the degrees of freedom, or the test is unreliable.
What is vague conclusion?Show answer
State the conclusion in context (referring to the actual variables), not just "reject ".
What is q1?Show answer
State the degrees of freedom for a contingency table. [1 mark]
What is q2?Show answer
Write down the chi-squared test statistic formula. [1 mark]
What is q3?Show answer
A Poisson goodness of fit test has classes and the mean was estimated from the data. State the degrees of freedom. [2 marks]
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