Which pair of plots would have the greatest chi-squared distance between them? (consider one of them the “observed” and the other the “expected”)
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(1−1)21+(10−1)21+(1−10)2100+81+8110=89.1
(3−5)25+(4−4)24+(5−3)2345+0+43=2.13
In order to demonstrate how to conduct a hypothesis test through simulation, we will be collecting data from this class using a poll.
You will have only 15 seconds to answer the following multiple choice question, so please get ready at pollev.com
…
The two shapes above have simple first names:
Which of the two names belongs to the shape on the left?
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What is a statement of the null hypothesis that corresponds to the notion the link between names and shapes is arbitrary?
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ˆpk=Number who chose "Kiki"Total number of people
Note: you could also simply nk, the number of people who chose “Kiki”.
Our technique: simulate data from a world in which the null is true, then calculate the test statistic on the simulated data.
Which simulation method(s) align with the null hypothesis and our data collection process?
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infer
What is the proper interpretation of this p-value?
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