Practice - Goodness of Fit
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Practice Questions
Test your understanding with targeted questions
What is the chi-square goodness of fit test used for?
💡 Hint: Think about prediction vs. reality.
What does Oi stand for?
💡 Hint: Remember the counts you see in your data.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What statistical test is used to measure goodness of fit?
💡 Hint: It pertains to observing vs. expecting.
True or False: Observed frequencies can be greater than expected frequencies.
💡 Hint: Consider the flexibility of data.
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Challenge Problems
Push your limits with advanced challenges
You randomly survey 100 people about their favorite fruit, finding the following observed frequencies: [30, 25, 20, 15, 10]. Given you expected each fruit to be favored equally, calculate the chi-square statistic and interpret your findings (consider each category is 20).
💡 Hint: Follow your formula to compute the deviations.
A company claims their paint colors are distributed evenly across five categories. Their observed sales numbers are [50, 30, 10, 5, 5]. What’s the chi-square statistic? Does it support their claim?
💡 Hint: Calculate what each deviation says about the actual sales numbers.
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