Contents
- 1 How do you find the frequency polygon in statistics?
- 2 Is area under a frequency polygon is greater than the area under histogram?
- 3 How does a frequency polygon looks like?
- 4 What is frequency polygon with example?
- 5 What are the characteristics of frequency polygon?
- 6 What are the features of frequency polygon?
- 7 What are the uses of a frequency polygon?
- 8 How do you draw a frequency polygon?
- 9 What is difference between frequency polygon and line graph?
How do you find the 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.
Is area under a frequency polygon is greater than the area under histogram?
The area under a histogram is . We know that the area under histogram is equal to the area under frequency polygon. It can be understood by constructing frequency polygon and histogram. When we draw graph, we will see that area under frequency polygon is same as area under histogram.
What is a histogram and frequency polygon?
Whereas a histogram is built of bins with a width representing the interval, and a height representing the quantity of data points in each interval, a frequency polygon is constructed by drawing a point to represent the frequency of a particular interval and connecting that point to the one representing the frequency …
How does a frequency polygon looks like?
A frequency polygon is very similar to a histogram. In fact, they are almost identical except that frequency polygons can be used to compare sets of data or to display a cumulative frequency distribution. In addition, histograms tend to be rectangles while a frequency polygon resembles a line graph.
What is frequency polygon with example?
Answer: The major difference between a frequency polygon and frequency curve is that the drawing of a frequency polygon by joining points by a straight line while the drawing of a frequency curve takes place by a smooth hand….Solved Example for You.
| Test Scores | Frequency |
|---|---|
| 49.5-59.5 | 5 |
| 59.5-69.5 | 10 |
| 69.5-79.5 | 30 |
| 79.5-89.5 | 40 |
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.
What are the characteristics of frequency polygon?
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. The first point is on the x-axis (y = 0) and is placed in the middle of the interval which precedes the first bar of the histogram.
What are the features of frequency polygon?
A frequency polygon aids in the easy comparison of two frequency distributions. When the total frequency is large and the class intervals are narrow, the frequency polygon becomes a smooth curve known as the frequency curve. A frequency polygon illustrating the data in Table 1 is shown in Figure 2.
Why is frequency polygon better than histogram?
The primary purpose of a frequency polygon is to allow histogram-like data representation of two sets of data on the same graph. Two histograms on the same graph tend to shroud each other and make comparison more difficult, but two frequency polygons can be graphed together with much less interference.
What are the uses of a frequency polygon?
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How do you draw a frequency polygon?
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.
What do you mean by frequency polygon?
Frequency Polygon. 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. Click to see full answer.
What is difference between frequency polygon and line graph?
A frequency polygon (or histogram) is used to display the entire frequency distribution (counts) of a continuous variable . An arithmetic-scale line graph is used to plot a series of observed data points (counts or rates), usually over time.