BESC 3010 Ch8 Questions and Answers
| Latest Update | 2024/2025 | Graded A+
What is the purpose of conducting a chi-square test?
A chi-square test is used to determine if there is a significant association between categorical
variables, helping to analyze whether the observed frequencies diff...
BESC 3010 Ch8 Questions and Answers
| Latest Update | 2024/2025 | Graded A+
What is the purpose of conducting a chi-square test?
✔✔A chi-square test is used to determine if there is a significant association between categorical
variables, helping to analyze whether the observed frequencies differ from the expected
frequencies.
How do you interpret the results of a chi-square test?
✔✔The results of a chi-square test are interpreted by comparing the calculated chi-square
statistic to a critical value from the chi-square distribution; if the statistic exceeds the critical
value, we reject the null hypothesis.
What is the difference between a goodness-of-fit test and a test of independence?
✔✔A goodness-of-fit test assesses whether the observed distribution of a single categorical
variable matches an expected distribution, while a test of independence evaluates whether two
categorical variables are related.
What assumptions must be met to conduct a chi-square test?
1
, ✔✔The assumptions include having a random sample, expected frequencies of at least five in
each category, and independent observations within the dataset.
How can a contingency table help in statistical analysis?
✔✔A contingency table organizes data on two categorical variables, allowing for easy
comparison and analysis of frequencies, which aids in determining relationships between the
variables.
What does it mean if a chi-square test yields a p-value less than 0.05?
✔✔A p-value less than 0.05 suggests strong evidence against the null hypothesis, indicating that
there is likely a significant association between the variables being studied.
What is the role of effect size in the context of a chi-square test?
✔✔Effect size provides a measure of the strength of association between variables, offering
additional context to the statistical significance of the chi-square test results.
How do you determine expected frequencies in a chi-square test?
2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller SterlingScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.92. You're not tied to anything after your purchase.
