Goodness of Fit (Edexcel A-Level Further Mathematics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In a χ² goodness of fit test, what does the test determine?
In a χ² goodness of fit test, what does the test determine?
How well a distribution fits data
Is a Yates correction required in goodness of fit tests when ?
Is a Yates correction required in goodness of fit tests when ?
No, never required
70 items in ratio 1:2:3:1. What are the expected values?
70 items in ratio 1:2:3:1. What are the expected values?
10:20:30:10
For 4 categories with one constraint, what are the degrees of freedom?
For 4 categories with one constraint, what are the degrees of freedom?
3
What is the formula for calculating each χ² contribution?
What is the formula for calculating each χ² contribution?
If and critical value = 7.815 at 5% level, what is the decision?
If and critical value = 7.815 at 5% level, what is the decision?
Do not reject
In goodness of fit tests, which statement is correct?
In goodness of fit tests, which statement is correct?
Model fits the data
If you estimate one parameter from data, how does change?
If you estimate one parameter from data, how does change?
Decreases by 1
What should you do if an expected frequency is less than 5?
What should you do if an expected frequency is less than 5?
Combine items/categories
If critical value 9.488, what do you conclude?
If critical value 9.488, what do you conclude?
Reject