How do you name a frequency polygon?

To create a frequency polygon, start just as for histograms, by choosing a class interval. Then draw an X-axis representing the values of the scores in your data. Mark the middle of each class interval with a tick mark, and label it with the middle value represented by the class.

How do you describe the shape of a frequency polygon?

The frequency polygon is a curve that is drawn on the x-axis and the y-axis. The x-axis represents the values in the dataset while the y-axis shows the number of occurrences of each distinct category. The frequency polygon can serve as an alternative to a histogram.

What is frequency polygon in statistics with example?

A frequency polygon is almost identical to a histogram, which is used to compare sets of data or to display a cumulative frequency distribution. It uses a line graph to represent quantitative data. Tables, graphs, pie-charts, bar graphs, histograms, polygons etc. are used to represent statistical data pictorially.

What is polygon of frequency?

A frequency polygon is a line graph of class frequency plotted against class midpoint. It can be obtained by joining the midpoints of the tops of the rectangles in the histogram (cf. Fig. 3.3.).

What are the characteristics of frequency polygon?

A frequency polygon is a graph constructed by using lines to join the midpoints of each interval, or bin. The heights of the points represent the frequencies. A frequency polygon can be created from the histogram or by calculating the midpoints of the bins from the frequency distribution table.

What is difference between frequency and frequency polygon?

A frequency polygon is a graph constructed by using lines to join the midpoints of each interval/ The midpoint is also called as the class mark of that particular class. The only difference between a frequency polygon and a frequency curve is the following, A frequency curve is a smooth, free hand drawn curve.

How to draw a frequency polygon step by step?

To draw frequency polygons, we begin with, drawing histograms and follow the following steps: Step 1- Choose the class interval and mark the values on the horizontal axes. Step 2- Mark the mid value of each interval on the horizontal axes. Step 3- Mark the frequency of the class on the vertical axes.

How are frequency polygons similar to line graphs?

Frequency polygons are analogous to line graphs, and just as line graphs make continuous data visually easy to interpret, so too do frequency polygons. To construct a frequency polygon, first examine the data and decide on the number of intervals, or class intervals, to use on the x -axis and y -axis.

How are Heights represented in a frequency polygon?

The heights are represented on the horizontal axes on a suitable scale as shown. The number of students is represented on the vertical axes on a suitable scale as shown. Now rectangular bars of widths equal to the class- size and the length of the bars corresponding to a frequency of the class interval is drawn.

How are class intervals related to frequency polygons?

If the class intervals all have equal size, the heights of the rectangles are proportional to the class frequencies and it is then customary to have the heights numerically equal to the class frequencies. If class intervals do not have equal size, these heights must be adjusted.

How do you name a frequency polygon? To create a frequency polygon, start just as for histograms, by choosing a class interval. Then draw an X-axis representing the values of the scores in your data. Mark the middle of each class interval with a tick mark, and label it with the middle value represented by…