Amit M Agarwal Solutions for Chapter: Statistics, Exercise 4: Entrances Gallery

Author:Amit M Agarwal

Amit M Agarwal Mathematics Solutions for Exercise - Amit M Agarwal Solutions for Chapter: Statistics, Exercise 4: Entrances Gallery

Attempt the free practice questions on Chapter 20: Statistics, Exercise 4: Entrances Gallery with hints and solutions to strengthen your understanding. Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1 solutions are prepared by Experienced Embibe Experts.

Questions from Amit M Agarwal Solutions for Chapter: Statistics, Exercise 4: Entrances Gallery with Hints & Solutions

EASY
JEE Advanced
IMPORTANT

The mean of five observations is 4 and their variance is 5.2. If three of these observations are 1,2 and 6, then the other two are 

EASY
JEE Advanced
IMPORTANT

The A.M. of 9 terms is 15. If one more term is added to this series, then the A.M. becomes 16. The value of the added term is 

EASY
JEE Advanced
IMPORTANT

If the median of x5,x,x4,x2,x3x>0 is 8, then the value of x is

EASY
JEE Advanced
IMPORTANT

If the standard deviation of 3,8,6,10,12,9,11,10 12,7 is 2.71, then the standard deviation of 30,80,60,100,120,90,110,100,120,70 is

EASY
JEE Advanced
IMPORTANT

Coefficient of variation of two distributions are 50% and 60% and their arithmetic means are 30 and 25, respectively. Difference of their standard deviation is

EASY
JEE Advanced
IMPORTANT

Mean deviation of 6, 8, 12, 15, 10, 9 through mean is

EASY
JEE Advanced
IMPORTANT

If the value observed are 1,2,3,,n each with frequency 1 and n is even, then the mean deviation from mean equals

EASY
JEE Advanced
IMPORTANT

The mean and variance of n observations x1,x2,x3,,xn are 5 and 0, respectively. If i=1nxi2=400, then the value of n is equal to