Expected Counts in Two-Way Tables
AP Statistics · Flashcards · Recall
AP STATISTICS · FLASHCARDS
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QUESTION
What conclusion is drawn if observed counts significantly differ from expected counts?
QUESTION
How do observed counts relate to expected counts in hypothesis testing?
QUESTION
Identify the formula to compute the expected count for a cell in a contingency table.
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ANSWER
Expected Count =
Row Total
×
Column Total
Grand Total
\frac{\text{Row Total} \times \text{Column Total}}{\text{Grand Total}}
Grand Total
Row Total
×
Column Total
. Standard formula for expected frequencies in contingency tables under independence assumption.
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