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Quantitative Aptitude Practice Statistics Study Material

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Statistics

Choose the arithmetic mean of first n natural numbers.

a) N/2
b) N+1/2
c) (n+1)/2
d) 2n+1/2

✔Answer

Correct Answer Is : (n+1)/2

Solution Is :

Find the mean of a grouped data where F29=162 for 20 number of persons.

a) 182
b) 18.2
c) 8.1
d) 6.1

✔Answer

Correct Answer Is : 8.1

Solution Is :

Find the l if the median class is 40-60

a) 40
b) 50
c) 60
d) 45

✔Answer

Correct Answer Is : 40

Solution Is :

If the mean and mode of a grouped data is 5.5 and 7.5 the calculate the Median.

a) 5.17 approx.
b) 6.17 approx.
c) 7.17 approx.
d) 8.17 approx.

✔Answer

Correct Answer Is : 6.17 approx.

Solution Is :

Check whether the empirical relation between Mean, Mode and median is Median = 3mode+2mean

a) TRUE
b) FALSE
c) Some extent
d) All of these

✔Answer

Correct Answer Is : FALSE

Solution Is :

What can we determine from the interaction of less than type and more than type of ogive.

a) Mean
b) Median
c) Mode
d) All of these

✔Answer

Correct Answer Is : Median

Solution Is :

The _____ of the point of interaction of the 2 ogives on the same axis give median.

a) Tendency
b) Abscissa
c) Mode
d) Mean

✔Answer

Correct Answer Is : Abscissa

Solution Is :

What is the method used for finding mean of grouped data.

a) Direct method
b) Step deviation method
c) Assumed mean method
d) All of these

✔Answer

Correct Answer Is : All of these

Solution Is :

Find the mean of 44,34,25,64,7,89,23,34?

a) 30
b) 40
c) 50
d) 60

✔Answer

Correct Answer Is : 40

Solution Is :

The mean no. of days a student remains absent is 12.47 approx. from 40 student of a school. Find the ∑fiui ?

a) 300
b) 299
c) 400
d) 399

✔Answer

Correct Answer Is : 399

Solution Is :

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Quantitative Aptitude Practice Statistics Study Material

Statistics

Choose the arithmetic mean of first n natural numbers.

Correct Answer Is : (n+1)/2

Solution Is :

Find the mean of a grouped data where F29=162 for 20 number of persons.

Correct Answer Is : 8.1

Solution Is :

Find the l if the median class is 40-60

Correct Answer Is : 40

Solution Is :

If the mean and mode of a grouped data is 5.5 and 7.5 the calculate the Median.

Correct Answer Is : 6.17 approx.

Solution Is :

Check whether the empirical relation between Mean, Mode and median is Median = 3*mode+2*mean

Correct Answer Is : FALSE

Solution Is :

What can we determine from the interaction of less than type and more than type of ogive.

Correct Answer Is : Median

Solution Is :

The _____ of the point of interaction of the 2 ogives on the same axis give median.

Correct Answer Is : Abscissa

Solution Is :

What is the method used for finding mean of grouped data.

Correct Answer Is : All of these

Solution Is :

Find the mean of 44,34,25,64,7,89,23,34?

Correct Answer Is : 40

Solution Is :

The mean no. of days a student remains absent is 12.47 approx. from 40 student of a school. Find the ∑fiui ?

Correct Answer Is : 399

Solution Is :

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Check whether the empirical relation between Mean, Mode and median is Median = 3mode+2mean