MLS-C01 Exploratory Data Analysis Practice Question
A data analyst wants to understand the distribution of a continuous variable. Which visualization is most appropriate for this purpose?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Histogram
(Histogram) is correct because a histogram displays the frequency distribution of a continuous variable by grouping data into bins. Option A (Box plot) is incorrect because it shows summary statistics (median, quartiles, outliers) but not the full distribution. Option B (Bar chart) is incorrect because bar charts are for categorical data, not continuous. Option D (Scatter plot) is incorrect because it shows the relationship between two continuous variables, not the distribution of a single variable.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Box plot
Why it's wrong here
Box plot shows quartiles and outliers but not the full distribution.
- ✗
Bar chart
Why it's wrong here
Bar chart is for categorical data.
- ✓
Histogram
Why this is correct
Histogram displays the distribution of a single continuous variable.
- ✗
Scatter plot
Why it's wrong here
Scatter plot is for two variables.
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