How many types of frequency curves are there?
There are two types of Cumulative Frequency Curves (or Ogives) : More than type Cumulative Frequency Curve.
What is ogive curve?
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 is the use of frequency curve?
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.
How do you find the frequency curve?
Frequency curve is obtained by joining the points of frequency polygon by a freehand smoothed curve.To plot a frequency curve without using histogram, we need to plot the frequency of the class against its’ class marks and join the points with line segments.
Is frequency curve and ogive the same?
First we prepare the cumulative frequency table, then the cumulative frequencies are plotted against the upper or lower limits of the corresponding class intervals. By joining the points the curve so obtained is called a cumulative frequency curve or ogive.
What is a frequency distribution curve?
Frequency distribution, in statistics, a graph or data set organized to show the frequency of occurrence of each possible outcome of a repeatable event observed many times. A frequency distribution can be graphed as a histogram or pie chart.
What is a smoothed frequency curve?
If a frequency polygon is smoothed, a curve is obtained, called the frequency curve. This smoothing can be performed if the number of observations in the frequency distribution becomes infinitely large and the widths of the classes become infinitely small.
What is smoothed frequency?
The object of drawing a smoothed curve is to eliminate as far as possible all accidental variations which exists in the original data, while smoothening, the top of the curve would overtop the highest point of polygon particularly when the magnitude of the class interval is large. …
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 the difference between frequency polygon and frequency curve?
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.