CompTIA Data+ (DA0-002)VisualizationEasy
A data analyst is tasked with visualizing the distribution of customer ages within different demographic segments. The goal is to identify if certain age groups are more prevalent in specific segments and to observe the shape of these distributions. Which of the following chart types would be MOST effective for this analysis?
- AScatter plot
- BHistogram
- CPie chart
- DLine chart
Show answer & explanationAnswer & explanation
Correct answer: B. Histogram
A histogram is ideal for displaying the distribution of a single numerical variable, such as age, by grouping data into bins and showing the frequency of data points within each bin. This allows for easy identification of prevalent age groups and the overall shape of the distribution.
Why the other options are wrong
- A. Scatter plots are used to show the relationship between two numerical variables, not the distribution of one.
- C. Pie charts are used to show parts of a whole, typically for categorical data, and are not suitable for numerical distribution.
- D. Line charts are best for showing trends over time or sequential data, not for distribution of a single variable.
Histogram
A graphical representation that displays the distribution of a numerical data set, showing the frequency of data points within specified ranges (bins).
- Used for continuous numerical data.
- Shows the shape, spread, and central tendency of data.
- Bars represent frequency or count within a bin.
Memory trick: Discover data's story, pick the chart that fits its glory.