About RS Aggarwal Solutions Class 9 Maths Chapter 17 Bar Graph, Histogram and Frequency Polygon
Here are the definitions of bar graph, histogram, and frequency polygon, which are commonly taught in Class 9 CBSE mathematics:
Bar Graph:
A bar graph is a graphical representation of data using rectangular bars. It is used to compare and display categorical or discrete data. In a bar graph, the length of each bar represents the frequency or quantity of the data it represents. The bars are drawn parallel to each other, and the height or length of each bar corresponds to the numerical value it represents. The horizontal axis of a bar graph represents the categories or variables, while the vertical axis represents the scale or frequency of the data. Check out all the solutions of RS Aggarwal for class 9 Maths and to get the best Home tuition for class 9 Maths find the tutors.
Histogram:
A histogram is a graphical representation of data that displays continuous data using adjacent rectangular bars. It is similar to a bar graph, but the bars in a histogram touch each other because the data is continuous and falls within specific intervals or classes. The width of each bar represents the interval or class width, and the height represents the frequency or frequency density of the data in that interval. Histograms are commonly used to analyze and display data distribution, such as frequency distribution of ages, heights, test scores, etc.
Exercise of RS Aggarwal Class 9 Chapter 17 Bar Graph, Histogram and Frequency Polygon
Chapter 17 Exercise 17A
Chapter 17 Exercise 17B