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JEE Advanced
IMPORTANT
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The best statistical measure used for comparing the two series is

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Important Questions on Statistics

EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 54
The sum of square of deviations for 10 observations taken from mean 50 is 250. The coefficients of variation is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 55
For a given distribution of marks, mean is 35.16 and its standard deviation is 19.76. The coefficient of variation is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 56
The coefficient of variation of two series are 70 and 90 and their standard deviation are 17.5 and 18, respectively. The mean of two series are
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 57
The standard deviations of two sets containing 10 and 20 members are 2 and 3, respectively measured from their common mean 5. The SD for the whole set of 30 members is
MEDIUM
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 58
One set containing five members has mean 8, variance 18 and the second set containing three members has mean 8 and variance 24. The variance of combined set of numbers is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 59
The mode of a moderately symmetrical series is 18 and mean is 24. The median is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 61
If in a moderately skewed distribution, the values of mode and mean are 6λ and 9λ respectively, then the value of median is
EASY
JEE Advanced
IMPORTANT
Complete Study Pack for Engineering Entrances Objective Mathematics Vol 1>Chapter 20 - Statistics>Target Exercises>Q 67
The arithmetic mean of 10 observations is 12.45. If each reading is increased by 5, then resulting mean is increased by