Question

Which statistical test is most appropriate for comparing the mean hemoglobin levels between two independent groups?

• A. Paired t-test
• B. Chi-square test
• C. Independent t-test
• D. ANOVA

Hint:

2 groups (independent) $\rightarrow$ \textbf{Independent t-test} Same group (before-after) $\rightarrow$ Paired t-test

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The choice of a statistical test depends on the type of data (continuous vs. categorical) and the relationship between the groups.
Step 2: Detailed Explanation:
1. Hemoglobin levels: This is continuous (numerical) data.
2. Two independent groups: These are two separate sets of people (e.g., males vs. females).
- Independent t-test: Used to compare the means of two independent groups.
- Paired t-test: Used for the same group at two different times.
- Chi-square test: Used for categorical data (e.g., yes/no).
- ANOVA: Used to compare means across three or more groups.
Step 3: Final Answer:
The Independent t-test is used for comparing means of two separate groups.