MCQs of Statistics – MEASURES OF DISPERSION

In a symmetrical distribution mean, median and mode, _____

The second moment about mean is _____

The A.M. is greater than mode is equal to ______

The frequency distribution mean > Median > Mode is called _______

Range of 5,5,5,5, is _______

which is poor measure of dispersion in open-end distribution ________

The degree to which numerical data tend to spread about an average value is a__________

If y= bx + c the range of y is ________

If y = bx + a the mean deviation of y is

If y= ax + b the S.D. of y is ______

Absolute sum of deviations is minimum from _____

The lack of uniformity is called _____

Relative measure of skewness was introduced by _______

Second moment about mean is always equal to ______

In grouped data, the range is the difference between _______

The measure of relative dispersion is called ________

Mean deviation is equal to 4/5 of the _____ manipulation.

Quartile deviation is not capable of manipulation_______

The correct variance is define as the ________

The variance of 4,4,4,4,4,4 is ______

Mean deviation is always ______

In symmetrical distribution, the co-efficient of skewness is equal to _____

The S.D. and variance are ____ of origine.

_____ of the distribution which is measured relative to the distribution known as Normal.

The ____ in the distribution around which the observation to lie.

Check the consistency used _____

The standard deviation is affected by the value of every_______

The value of interval ^{x ± S} include _____

First movement about mean is always equal to ______

First moment about origin is always equal to _________

________ is the simplest means of dispersion.

The sum of powers of deviation from mean is zero is called ______

If variance iv standard deviation is minimum if the deviation taken from______

If Skewed distribution the three averages mean, median and mode are ________

If third moment about mean is equal to zero, then distribution is _______

The sum of the squares of deviations is the least when measured from________

The sum of absolute deviations from median is _____

Mean deviation =______ S.D.

The shape of the symmetrical distribution is _______

Standard deviation is always calculated from _______

If all values are same then the measure of dispersion will be

suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be:

Variance remains unchanged by change of

If Y=-8X – 5 and SD of X is 3, then SD of Y is

If the standard deviation of the values 2,4,6,8 is 2.33, then the standard deviation of the values 4,6,8,10 is

The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is

The percentage of value lies between ^X¯¯¯±2sD is

Lowest value of variance can be

Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is

The mean deviation of the values, 18, 12, 15, is