What is frequency polygon and its uses?

Posted on by David Darling

What is frequency polygon and its uses?

Frequency polygons are a graphical device for understanding the shapes of distributions. They serve the same purpose as histograms, but are especially helpful for comparing sets of data. Frequency polygons are also a good choice for displaying cumulative frequency distributions.

What is frequency polygon in geography?

Frequency polygon is a graph showing the frequency distribution. It is drawn by joining the middle points of the upper side of the adjacent rectangles or bars of the histogram with straight lines.

Which sentence defines a frequency polygon?

Term. Definition. frequency polygon. A frequency polygon is a graph constructed by using lines to join the midpoints of each interval, or bin.

What is frequency polygon Mcq?

Answer. MCQ: A frequency polygon is a many sided. rectangle.

What is frequency polygon class 11?

A frequency polygon is a graphical form of representation of data. It is used to depict the shape of the data and to depict trends. It is usually drawn with the help of a histogram but can be drawn without it as well.

What is a frequency polygon Wikipedia?

A frequency polygon shows a frequency distribution emphasizing the overall pattern in the data. It is constructed from a histogram. The frequency polygon is a polygon – a closed two-dimensional figure of straight line segments – joining the mid points of the top of the bars of a histogram.

What is frequency polygon for Class 9?

What is frequency polygon and frequency curve?

A frequency polygon is a closed figure that is formed by joining the top midpoints of all the rectangles of histograms using a straight line. Whereas frequency curve is a curve that is obtained by joining the top midpoints of all rectangles of a histogram using a free hand.

How do you draw a frequency polygon in Class 9?

To draw a frequency polygon we mark the class marks along x-axis. Therefore, the modified tables are: We plot the ordered pairs (5, 3), (15, 9), (25, 17), (35, 12) and (45, 9) and join the points by line segments and obtain the frequency polygon of section A.

What is frequency polygon in statistics class 9?

What is frequency polygon in statistics PDF?

The frequency polygon is a graph that displays the data by using lines that. connect points plotted for the frequencies at the midpoints of the classes.

What are advantages and disadvantages of frequency polygon?

Class Interval: It is necessary that the people should select a proper class interval.

  • Midpoint: This is the center point of the bar is to be drawn for the data and this should be identified for the symmetry of the graph as such.
  • Class Mark: It is nothing but the midpoint.

    • What are the uses of a frequency polygon?

    Choose the class interval and mark the values on the horizontal axes

  • Mark the mid value of each interval on the horizontal axes.
  • Mark the frequency of the class on the vertical axes.
  • Corresponding to the frequency of each class interval,mark a point at the height in the middle of the class interval
  • Connect these points using the line segment.

    • What is difference between frequency polygon and line graph?

    Obtain the frequency distribution and compute the mid points of each class interval.

  • Represent the mid points along the X-axis and the frequencies along the Y-axis.
  • Plot the points corresponding to the frequency at each mid point.

    • Why is the frequency polygon used?

    Frequency polygons – creation and interpretation.

  • Cumulative frequency polygons – creation and interpretation.
  • Overlaid frequency polygons – creation and interpretation.