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These grades are the numerical information, sometimes known as raw data, that was gathered to determine the English class's level of achievement.
The way the results are shown barely provides any indication of the student's English proficiency. To gain some understanding of the numerical data, it must be presented methodically. There are several approaches to systematic numerical data presentation.
A histogram displays the distribution of the data and provides a visual summary of the data. They are created using a frequency table, which provides an overview of the information. A histogram often has two scales: a horizontal scale that shows the individual intervals, also called classes, and a vertical scale that shows frequencies. Each distinct interval is represented by bars, where the height of the bar reflects the frequency.
A frequency polygon can be drawn by following the given steps.
