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# NCERT Solutions Class 11 Maths Chapter 15 Exercise 15.2 Statistics

NCERT solutions for class 11 maths chapter 15 exercise 15.2 statistics deals with the second measure of dispersion that is the standard deviation. We can derive the variance from the standard deviation by taking its square. In a series, where the degree of variability is very high, the median is not a representative central tendency. Thus, the mean deviation about the median calculated for such a series can not be fully relied upon. Further algebraic treatment is required to solve this issue, hence, we use the standard deviation. As with the previous exercise, this concept is also applied to both grouped and ungrouped data. NCERT solutions class 11 maths chapter 15 exercise 15.2 has 10 questions that range from simple to intermediate level. Kids must be adept at using the formulas so as to successfully proceed through these exercises.

Another important section covered is the shortcut method to find the variance and standard deviation. This is called the step deviation method and can be applied when the discrete distribution or the midpoints of different classes in a continuous distribution are large. The class 11 maths NCERT solutions chapter 15 exercise 15.2 statistics can be used to help instill a deeper knowledge of these concepts and can be found below.

**☛** Download NCERT Solutions Class 11 Maths Chapter 15 Exercise 15.2

**Exercise 15.2 Class 11 Chapter 15 **

### More Exercises in Class 11 Maths Chapter 15

- NCERT Solutions Class 11 Maths Chapter 15 Ex 15.1
- NCERT Solutions Class 11 Maths Chapter 15 Ex 15.3
- NCERT Solutions Class 11 Maths Chapter 15 Miscellaneous Ex

## NCERT Solutions Class 11 Maths Chapter 15 Exercise 15.2 Tips

NCERT solutions class 11 maths chapter 15 exercise 15.2 statistics sees the use of many formulas. While learning them and understanding how to apply these formulas to various questions kids should try to find patterns within them. This will lessen the time taken to study these formulas while increasing efficiency.

NCERT solutions class 11 maths chapter 15 exercise 15.2 have questions that are presented in different formats requiring various methods to solve the same. Thus, by solving these sums kids get an idea of the type of problems that they can encounter in an examination and can prepare accordingly.

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