Question

The statistical test which is used to compare more than two means is:

• A. t Test
• B. Chi square Test
• C. Z Test
• D. Analysis of Variance

Hint:

ANOVA: compares multiple means.
t-test: two means.
Chi-square: categorical data.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Different statistical tests are used for different purposes.
Comparing multiple means requires a specific test.

Step 2: Key Formula or Approach:
No specific formula.
Need to know the uses of statistical tests.

Step 3: Detailed Explanation:
t Test: compares two means.
Chi square Test: compares frequencies.
Z Test: compares means with known variance.
Analysis of Variance (ANOVA): compares more than two means.
Thus, ANOVA is used for more than two means.

Step 4: Final Answer:
Analysis of Variance is used to compare more than two means.
Hence, the correct option is (D).