WBCHSE Mathematics for Class 11>Statistics and Probability>Chapter 26 - Statistics>EXERCISE 1B

R S Aggarwal Solutions for Exercise 2: EXERCISE 1B

Author:R S Aggarwal

R S Aggarwal Mathematics Solutions for Exercise - R S Aggarwal Solutions for Exercise 2: EXERCISE 1B

Attempt the practice questions from Exercise 2: EXERCISE 1B with hints and solutions to strengthen your understanding. WBCHSE Mathematics for Class 11 solutions are prepared by Experienced Embibe Experts.

Questions from R S Aggarwal Solutions for Exercise 2: EXERCISE 1B with Hints & Solutions

EASY

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 2

Find the standard deviation for first six odd natural numbers.

EASY

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 3

Using shortcut method, find the standard deviation for the data:

$x_{i}$	$4$	$8$	$11$	$17$	$20$	$24$	$32$
$f_{i}$	$3$	$5$	$9$	$5$	$4$	$3$	$1$

EASY

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 4

Using shortcut method, find the standard deviation for the data:

$x_{i}$	$6$	$10$	$14$	$18$	$24$	$28$	$30$
$f_{i}$	$2$	$4$	$7$	$12$	$8$	$4$	$3$

EASY

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 5

Using shortcut method, find the standard deviation for the data:

$X_{i}$	$10$	$15$	$18$	$20$	$25$
$f_{i}$	$3$	$2$	$5$	$8$	$2$

EASY

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 6

Using shortcut method, find the mean, variation and standard deviation for the data:

$x_{i}$	$92$	$93$	$97$	$98$	$102$	$104$	$109$
$f_{i}$	$3$	$2$	$3$	$2$	$6$	$3$	$3$

MEDIUM

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 7

Using shortcut method, find the standard deviation for the data:

Class	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$
Frequency	$5$	$8$	$15$	$16$	$6$

MEDIUM

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 8

Using shortcut method, find the standard deviation for the data:

Class	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$	$80 - 90$	$90 - 100$
Frequency	$3$	$7$	$12$	$15$	$8$	$3$	$2$

MEDIUM

11th West Bengal Board

IMPORTANT

WBCHSE Mathematics for Class 11>Chapter 26 - Statistics>EXERCISE 1B>Q 9

Using shortcut method, find the standard deviation for the data:

Class	$25 - 35$	$35 - 45$	$45 - 55$	$55 - 65$	$65 - 75$
Frequency	$64$	$132$	$153$	$140$	$51$

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