Question14 A Chi squared test would analyse what ?Select one alternative: Difference in mean values between two groups. Difference in proportions between two groups. Difference in SD and SEM of two groups. Difference in t-value between two groups. Reset

Question

BlackTom AI · Accepted Answer

To begin, let's restate the question and the set of answer choices so we can evaluate each option clearly.
Question: A Chi squared test would analyse what ? Select one alternative:
- Difference in mean values between two groups.
- Difference in proportions between two groups.
- Difference in SD and SEM of two groups.
- Difference in t-value between two groups.

Option 1: Difference in mean values between two groups.
This choice describes comparing central tendencies of continuous data, which is typically addressed by a t-test (for two groups) or ANOVA (for more than two groups), not by a chi-squared test. The chi-square test does not compare means, so this option is incorrect.

Option 2: Difference in proportions between two groups.
This is the core use of the chi-squared test: evaluating whether observed frequencies (or proportions) in categories differ from what would be expected under independence or a specified distribution. It applies to categorical data (counts in each category) and tests association or goodness-of-fit, making this option correct.

Option 3: Difference in SD and SEM of two groups.
Standard deviations and standard errors of the mean relate to dispersion and precision of numerical estimates, not to a direct chi-squared comparison of categorical data. A chi-square test does not directly test differences in SD or SEM between groups, so this option is incorrect.

Option 4: Difference in t-value between two groups.
The t-value is a statistic from the t-test, which compares means of continuous data under assumptions like normality and equal variances. A chi-square test does not produce or compare t-values, so this option is incorrect.

In summary, only Option 2 aligns with the purpose of the chi-squared test, which is to assess differences in proportions or frequencies across categorical groups, rather than means, variances, or t-statistics.

Question14 A Chi squared test would analyse what ?Select one alternative: Difference in mean values between two groups. Difference in proportions between two groups. Difference in SD and SEM of two groups. Difference in t-value between two groups. Reset

View Explanation

Log in for full answers

Similar Questions

Use the following information to find the 𝜒 2 test statistic based upon the observed count, and expected probabilities. Category Cat Dog Rhino Other Observed Counts 4 54 6 83 Expected Probabilities ? 0.21 0.25 0.19

Use the following information to find the 𝜒 2 test statistic based upon the observed count, and expected probabilities. Category Cat Dog Rhino Other Observed Counts 7 82 4 57 Expected Probabilities ? 0.03 0.19 0.23

Use the following information to find the 𝜒 2 test statistic based upon the observed count, and expected probabilities. Category Cat Dog Rhino Other Observed Counts 6 65 2 38 Expected Probabilities ? 0.24 0.03 0.11

Is there evidence to infer that there is a relationship between Evaluation and Gender?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler