About RS Aggarwal Solutions Class 9 Maths Chapter 18 Mean, Median and Mode of Ungrouped Data
In Class 9 CBSE mathematics, the concepts of mean, median, and mode are introduced to analyze and summarize ungrouped data. These measures provide insights into the central tendency and distribution of the data. Here is an explanation of each measure: 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.
Mean:
The mean is the average value of a set of data. To calculate the mean of ungrouped data, follow these steps:
Add up all the values in the dataset.
Divide the sum by the total number of values.
Formula for the mean:
Mean = (Sum of all values) / (Total number of values)
Median:
The median is the middle value in a dataset when arranged in ascending or descending order. To find the median of ungrouped data, follow these steps:
Arrange the data in ascending or descending order.
If the number of values is odd, the median is the middle value.
If the number of values is even, the median is the average of the two middle values.
Mode:
The mode is the value that appears most frequently in a dataset. To find the mode of ungrouped data, identify the value(s) that occur with the highest frequency. It is possible to have one mode (unimodal), two modes (bimodal), or more modes (multimodal).
Exercise of RS Aggarwal Class 9 Chapter 18 Mean, Median and Mode of Ungrouped Data
Chapter 18 Exercise 18A
Chapter 18 Exercise 18B
Chapter 18 Exercise 18C
Chapter 18 Exercise 18D
Chapter 18 Multiple Choice Questions (MCQs)