Consider the following: 
Required:
Prepare a horizontal comparative income statement.
Definitions:
Class Intervals
Ranges of values within which data points are grouped for frequency distribution purposes.
Histogram
A graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges.
Observations
The collected data points or measurements recorded during a scientific study or research project.
Symmetric
A characteristic of shapes or distributions that exhibit mirror-like similarity on either side of a central point or axis.
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