EASY
JEE Advanced
IMPORTANT
Earn 100

The sum of absolute deviations about median is

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Important Questions on Statistics

MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 43
For a series, the information available is n=10, Σx=60 and Σx2=1000. The standard deviation is
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 44
The sum of 10 items is 12 and sum of their squares is 18, then the standard deviation will be
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 45
The variance of 6, 8, 10, 12, 14 is
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 46
The mean and standard deviation of 1, 2, 3, 4, 5, 6 are
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 48
The standard deviation of certain data is 4 . Then, their variance is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 49
The standard deviation of -1,-2,-3,-4,-5,-6,-7 is
HARD
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 50
The mean and S.D of the marks of 200 candidates were found to be 40 and 15 respectively. Later, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S.D respectively are
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 51
Suppose values taken by a variable x are such that a≤xi≤b, where xi denotes the value of x in the ith case for i=1,2,3,…,n. Then,