Expected Counts
Definition
Expected counts are calculated values that represent what we would expect to observe in each category if there was no association between variables. They are based on assumptions and can be compared to observed counts to assess whether there is a significant relationship.
Analogy
Think of expected counts as predicting how many people will choose different flavors at an ice cream shop based on historical data. If 30% chose chocolate last month, and this month 100 people come in, we would expect around 30 people to choose chocolate.
Related terms
Observed Counts: Actual counts or frequencies obtained from collected data.
Degrees of Freedom: The number of independent pieces of information available for estimating statistical parameters.
Chi-Square Test: A statistical test used to determine if there is a significant association between categorical variables by comparing observed and expected counts.
"Expected Counts" appears in:
Study guides (2)
Additional resources (2)
Practice Questions (6)
What is the purpose of calculating expected counts in a two-way table?
Expected counts in a two-way table are based on:
When calculating expected counts in a two-way table, what does "n" represent?
Expected counts in a two-way table are calculated by:
How do you calculate the expected counts for the chi-square goodness of fit test?
In a chi-squared test for independence, which is true about the expected counts?
Resources
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.