What does a histogram represent in data visualization?
- The change of a variable over time
- The correlation between two variables
- The frequency distribution of a single variable
- The relationship between three variables
A histogram is a graphical representation of the distribution of a dataset. It is an estimate of the probability distribution of a continuous variable. To construct a histogram, the first step is to "bin" the range of values, i.e., divide the entire range of values into a series of intervals, and then count how many values fall into each interval.
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