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The mean deviation of the numbers 1,2,3,4,5 is-

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Important Questions on Statistics

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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 21
If mean =(3 median - mode) x, then the value of x is-
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 22
A man spends equal amount on purchasing three kinds of pens at the rate 5 Rs/pen, 10 Rs/pen, 20 Rs/pen, then average cost of one pen is :-
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 23
The median of 21 observation is 40. If each observations greater than the median are increased by 6, then the median of the observations will be-
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 24
The coefficient of range of the following distribution 10, 14, 11, 9, 8, 12, 6.
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 25

The S.D. of the following frequency distribution:

Class 0-10 10-20 20-30 30-40
fi 1 3 4 2
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 26
The mean of a distribution is 4. If its coefficient of variation is 58%. Then the S.D. of the distribution is:-
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 27
The average age of a teacher and three students is 20 years. If all students are of equal age and the difference between the age of the teacher and that of a student is 20 years, then the age of the teacher is-
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Beta Question Bank for Engineering: Mathematics>Chapter 24 - Statistics>EXERCISE-2>Q 28
Median of 5 observations i.e. 3log94,5log128,e2ln3,ln1e2+3, e2ln3+1log4e:-