Histogram

Histogram is a graph that shows the frequency distribution (shape) of numerical data. It is a good visualization to tell the skewness, kurtosis, and outliers of the data. Histogram is similar to a Bar Chart, but a histogram split the data into intervals, called bins.

Form

• Variable(s)num

  Select numerical variable you want to visualize with histogram. The scale of the variable will be applied as X-axis, and the frequency of a certain range will be plotted in Y-axis.

• Group byopt

  Select a categorical variable if you want to split the variable(s) into certain groups. You can leave this form blank or select "None" of you don't want to group the data.

• Number of Bins

  The number of bins generated in histogram depends on the number of data, and the calculation method. You can choose one of the methods available: Square-root choice, Sturges' formula, and Rice Rule. More information about the formula can be found here.

Example

You can use iris dataset to generate the histogram of Sepal.Length, Sepal.Width, Petal.Length, and Petal.Width. You can also split the bar by Species variable.

Try it »