Test: Measures Of Central Tendency And Dispersion- 4

If the class interval is open-end then it is difficult to find

 The class having maximum frequency is called

Mode is

The sum of the squares of the deviations of the variable is __________ when taken about A.M

The abscissa of the maximum frequency in the frequency curve is the

The A.M of 1, 3, 5, 6, x, 10 is 6. The value of x is

 If the A.M of any distribution be 25 & one term is 18. Then the deviation of 18 from A.M is

For finding A.M in Step – deviation method, the class intervals should be of

 (n+1)/2 th term is median if n is

The value of a variate that occur most often is called

The G.M of 2 & 8 is

 First Quartile lies in the class interval of the 

 Which one is true –

Semi-quartile range is one-fourth of the range in a normal symmetrical distribution.

 If each item is reduced by 15 A.M is

 If the variables are increased or decreased by the same proportion, the standard deviation changes by

 If the variables are increased or decreased by the same amount the standard deviation is

 Coefficient of Quartile Deviation is equal to 

If each item is reduced by 20, the standard deviation

The mean of the 1st n natural no. is

Coefficient of variation is a relative measure of

Coefficient of variation is equal to

 Quartile deviation is based on the

 Relative measures of dispersion make deviations in similar units comparable.

 S.D is less than Mean deviation

 If each item is reduced by 10, the range is

Coefficient of variation is independent of  the unit of measurement.

Whole frequency table is needed for the calculation of

 Mean is an absolute measure & Standard deviation is based upon it. Therefore standard deviation is a relative measure.

For a moderately non-symmetrical distribution, Quartile deviation = Standard deviation /3

If all the values are multiplies by the same quantity, the __________ & _________ also would be multiple of the same quantity.

 For a moderately non-symmetrical distribution, Probable error of standard deviation =Standard deviation/3

When all the values are equal then variance & standard deviation would be

Coefficient of standard deviation is 

If the same amount is added to or subtracted from all the values, the mean shall increase or decrease by the __________ amount

In _________ range has the greatest use.

 For a moderately non-symmetrical distribution, Mean deviation = 4/5 of standard deviation