Rbse Solutions for Class 11 maths Chapter 13 Miscellaneous Exercise | Statistics

16/03/2026 by By Subject Experts

Get detailed, step-by-step solutions for the NCERT Class 11 Maths Chapter 13 Miscellaneous Exercise Master advanced statistical problems involving Mean ($\bar{x}$), Variance ($\sigma^2$), and Standard Deviation ($\sigma$). Learn how to find missing observations given the mean and variance (Q.1-2). Analyze the effect of scaling (multiplication) on the mean and standard deviation (Q.3-4). Practice calculating the … Read more

Rbse Solutions for Class 11 maths Chapter 13 Exercise 13.1 | Mean Deviation

16/03/2026 by By Subject Experts

Get detailed, step-by-step solutions for NCERT Class 11 Maths Chapter 13 Exercise 13.1 The Mean Deviation (MD) is a measure of dispersion calculated as the average of the absolute differences between the data values and the mean or median. Learn to calculate Mean Deviation ($\text{MD}$) for ungrouped data about both the Mean ($\bar{x}$) (Q.1-2) and … Read more

Rbse Solutions for Class 11 maths Chapter 13 Exercise 13.2 | Mean and Variance

16/03/2026 by By Subject Experts

This exercise focuses on calculating the mean ($\bar{x}$), variance ($\sigma^2$), and standard deviation ($\sigma$) for different types of data, including ungrouped data, discrete frequency distributions, and continuous frequency distributions. Mean and Variance for Ungrouped Data (Q. 1–3) The formulas for ungrouped data are: $$\bar{x} = \frac{\sum x_i}{n} \quad \text{and} \quad \sigma^2 = \frac{1}{n} \sum (x_i … Read more