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2 cards from this section. Quick, good the night before a test.
What is the chi-square goodness of fit test used for?
Think about prediction vs. reality.
What does Oi stand for?
Remember the counts you see in your data.
What statistical test is used to measure goodness of fit?
It pertains to observing vs. expecting.
True or False: Observed frequencies can be greater than expected frequencies.
Consider the flexibility of data.
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).
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?
Calculate what each deviation says about the actual sales numbers.
4 more questions in this section. Enroll free to practise them all.
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