on April 18, 2022

What is frequency polygon in statistics?

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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.).

How do you describe 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 answer?

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 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.

What is frequency polygon in statistics class 9?

Frequency Polygons. 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. Statistics deals with the collection of data and information for a particular purpose.

What is frequency polygon in statistics Slideshare?

FREQUENCY POLYGON  frequency polygon: graph that uses lines that connect points plotted for the frequencies at the midpoints of the classes; frequencies are represented by the heights of the points  To construct a frequency polygon: Find the midpoints of each class Draw the x and y axes.

What is frequency curve Class 11?

A frequency curve is a curve that represents the frequencies of the distribution graphically. It can be drawn by using the histogram. The total area of a frequency curve is unity.

What is difference between histogram and frequency polygon?

Frequency polygon is an improvement over histogram because it provides a continuous curve indicating the causes of rise and fall in the data. On the other hand, frequency polygon is an approximate curve, but still it is more usefui as compared to histogram. 2.

What is histogram and frequency polygon?

Frequency polygon is a line graph, whereas histogram is a collection of adjacent rectangles. 2. Frequency polygon is multi-dimensional, whereas histogram is a two-dimensional figure. 3. Several frequency distributions can be plotted on the same axis as frequency polygon.

How do you construct a frequency polygon in statistics?

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.

What is frequency curve in statistics with example?

A Frequency Curve is a smooth curve which corresponds to the limiting case of a histogram computed for a frequency distribution of a continuous distribution as the number of data points becomes very large.

Is frequency polygon a statistical diagram?

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 the difference between a frequency polygon and an ogive?

A frequency polygon is a line graph while an orgive is a histogram . A frequency polygon displays class frequencies while an orgive displays cumulative frequencies there is no difference between a frequency polygon and ogive.

How do you draw a frequency polygon in an ogive?

Quote from video:We can say we are done creating our frequency polygon we just have to make it an actual polygon by closing it by connecting the last ordered pair to the x-axis.

What is the frequency curve?

A Frequency curve is a graph of frequency distribution where the line is smooth. It is just like a frequency polygon. In the polygon is line is straight, but in the curve the line is smooth. It is an area diagram. It is the graphical representation of frequency distribution.

What is cumulative frequency polygon?

An ogive (oh-jive), sometimes called a cumulative frequency polygon, is a type of frequency polygon that shows cumulative frequencies. In other words, the cumulative percents are added on the graph from left to right. An ogive graph plots cumulative frequency on the y-axis and class boundaries along the x-axis.

What are the 3 types of frequency distributions?

Statistics Chapter 2 Section 2-2 Page 43 Problems 1-18



A B
three types of frequency distributions, and explain when each should be used categorical frequency distribution, grouped frequency distribution, cumulative frequency distribution;

What are the different types of frequency curve?

Types of Frequency Distribution

  • Normal Distribution. The normal distribution, also known as a Gaussian distribution or “bell curve” is the most common frequency distribution. …
  • Skewed Distribution. …
  • Bimodal/Multimodal Distribution. …
  • Uniform Distribution. …
  • Logarithmic/Pareto. …
  • PERT/Triangular.


What are the two types of frequency?

Frequency is the value in numbers that shows how often a particular item occurs in the given data set. There are two types of frequency table – Grouped Frequency Distribution and Ungrouped Frequency Distribution.

What are the 5 types of frequency distribution?

Types of Frequency Distribution



  • Grouped frequency distribution.
  • Ungrouped frequency distribution.
  • Cumulative frequency distribution.
  • Relative frequency distribution.
  • Relative cumulative frequency distribution.


Where is frequency curve used?

Uses of Ogive Curve



Ogive Graph or the cumulative frequency graphs are used to find the median of the given set of data. If both, less than and greater than, cumulative frequency curve is drawn on the same graph, we can easily find the median value.

How many types of the frequency distribution are in statistics?

There are four types of frequency distributions: ungrouped frequency distributions, grouped frequency distributions, cumulative frequency distributions, and relative frequency distributions. A frequency distribution table represents how many each item in a data set occurs.

Why do we use frequency curves?

A frequency curve is a smooth curve for which the total area is taken to be unity. It is a limiting form of a histogram or frequency polygon. The frequency curve for a distribution can be obtained by drawing a smooth and free hand curve through the midpoints of the upper sides of the rectangles forming the histogram.