SCHOOL MATHEMATICS Class 10>Statistics>Chapter 9 - Measures of Central Tendency>EXERCISE 1A

Bidyut Guha Thakurta and Amitava Mitra Solutions for Exercise 1: EXERCISE 1A

Author: Bidyut Guha Thakurta & Amitava Mitra

Bidyut Guha Thakurta Mathematics Solutions for Exercise - Bidyut Guha Thakurta and Amitava Mitra Solutions for Exercise 1: EXERCISE 1A

Attempt the practice questions from Exercise 1: EXERCISE 1A with hints and solutions to strengthen your understanding. SCHOOL MATHEMATICS Class 10 solutions are prepared by Experienced Embibe Experts.

Questions from Bidyut Guha Thakurta and Amitava Mitra Solutions for Exercise 1: EXERCISE 1A with Hints & Solutions

MEDIUM

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 10

Find the mean of the following distribution by step deviation method.

Class boundary	$0 - 30$	$30 - 60$	$60 - 90$	$90 - 120$	$120 - 150$
Frequency	$12$	$15$	$20$	$25$	$8$

MEDIUM

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 11

From the following information given below if the mean is $20.6$ , find the value of $p$ .

Variate $(x_{i})$	$10$	$15$	$p$	$25$	$35$
Frequency $(f_{i})$	$3$	$10$	$25$	$7$	$5$

HARD

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 12

The cumulative frequency table of the marks obtained by the students is given below. Find the mean of the marks obtained.

Marks	$0$ or greater than $0$	$10$ or greater than $10$	$20$ or greater than $20$	$30$ or greater than $30$	$40$ or greater than $40$	$50$ or greater than $50$
Number of students	$40$	$36$	$22$	$11$	$2$	$0$

HARD

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 13

The mean of $n$ number of terms of a series is $x$ . If the sum of first $(n - 1)$ terms is $k$ , then the $n^{th}$ terms will be

EASY

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 13

The mean of the integer from $1$ to $10$ is

EASY

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 13

The mean of the prime numbers between $1$ and $10$ is

MEDIUM

10th West Bengal Board

IMPORTANT

SCHOOL MATHEMATICS Class 10>Chapter 9 - Measures of Central Tendency>EXERCISE 1A>Q 13

The frequency of three numbers $12, 15$ and $20$ are $(x + 2), x$ and $(x - 1)$ respectively. If the mean of the distribution is $14.5$ , then the value of $x$ is