Question

A frequency distribution helps

• A. determine how close a sample comes to the null hypothesis
• B. us to understand how one variable, $X$, relates to another variable, $Y$
• C. determine if a systematic association exists between two variables
• D. determine the shape of the empirical distribution of the variable

Hint:

Frequency distributions are univariate tools for seeing the data’s shape (skew, modes, tails).

Answer 1

The Correct Option is D

Step 1: Purpose of a frequency distribution.
It tabulates counts (or percentages) across categories/bins, letting us visualize the shape (modality, skewness, spread) of a single variable.
Step 2: Eliminate distractors.
(a) relates to hypothesis testing, not simply a frequency table.
(b)–(c) require bivariate tools (scatterplots/correlation/cross-tabs), not a univariate frequency distribution.
\[ \boxed{(d)} \]