A frequency curve is a graph obtained by joining the points of a frequency polygon freehand smoothly.
frequency polygon
The main difference is that the vertical scale for a frequency graph is in units (or numbers) whereas in a percentage graph, it is in percentages,
In order to plot the points on either the frequency polygon or curve, the mid values of the class intervals of the distribution are calculated. Then the frequencies with respect to the mid points are plotted. However in a frequency curve the points are joined by a smooth curve, where as in a frequency polygon the points are joined by straight lines. Apart from this major difference, a frequency polygon is a closed figure where as the frequency curve is not.
A cumulative frequency curve is a graph that shows the cumulative frequency of a data set. This type of graph can present data, such as medians and quartiles. Another name for this curve is an Ogive.
A cumulative frequency polygon has straight lines connecting the points. A normal cumulative frequency diagram uses a smooth curve to join the points.
In a Frequency Polygon, a line graph is drawn by joining all the midpoints of the top of the bars of a histogram. A frequency polygon gives the idea about the shape of the data distribution. The two end points of a frequency polygon always lie on the x-axis.
Oh, dude, it's like this: a histogram is like a bar graph that shows the frequency of data within specific intervals, while a frequency polygon is a line graph that connects the midpoints of the intervals in a histogram. So, it's like the difference between drawing bars and connecting dots. Cool, right?
graph?
A frequency curve is a graph obtained by joining the points of a frequency polygon freehand smoothly.
By its very nature, measuring cumulative frequency on either axis of a graph will produce a continuing line on the opposite axis. Therefore, it is impossible to construct a closed frequency polygon when dealing with cumulative frequency.
The difference between frequency polygon and line graphs is their purpose. Frequency polygons are for understanding shapes distributions, while line graphs shows information that is related in some way.
It could be a bar graph or a frequency polygon. Or, if the intervals are of different sizes, a histogram.
bar graph,histogram and frequency polygon are the three basic forms of statistical representation
No, a frequency polygon is a type of data visualization that uses line segments to connect points representing the frequencies of different classes. It shows the distribution of data values, but it does not necessarily represent the actual class frequencies.
frequency polygon
This is called a frequency polygon.