A line graph which represents all cases under data analysis is called a what?

A line graph which represents all cases under data analysis is called a what?

• A. Bar graph
• B. Frequency polygon
• C. Histogram
• D. Line graph

Answer: (B)

A frequency polygon is used to represent the distribution of a dataset by plotting points that correspond to the frequency of data points within specified intervals. To create a frequency polygon, the midpoints of the intervals are plotted on the x-axis against their corresponding frequencies on the y-axis. These points are then connected by straight lines. This type of graph is particularly useful in visualizing large data sets and trends across the frequency of cases analyzed. In this context, if the focus is on representing all cases under data analysis with a line that connects frequencies at certain data points, the frequency polygon effectively showcases that data distribution, making it the correct choice. A line graph, while similar, typically represents continuous data rather than categorical frequency data.

A frequency polygon is used to represent the distribution of a dataset by plotting points that correspond to the frequency of data points within specified intervals. To create a frequency polygon, the midpoints of the intervals are plotted on the x-axis against their corresponding frequencies on the y-axis. These points are then connected by straight lines. This type of graph is particularly useful in visualizing large data sets and trends across the frequency of cases analyzed.

In this context, if the focus is on representing all cases under data analysis with a line that connects frequencies at certain data points, the frequency polygon effectively showcases that data distribution, making it the correct choice. A line graph, while similar, typically represents continuous data rather than categorical frequency data.