Measures of Dispersion
Measures of Dispersion: Overview
This topic consists of various concepts like Measure of Dispersion,Range as Measure of Dispersion,Merits and Demerits of Range As Measure of Dispersion, etc.
Important Questions on Measures of Dispersion
Calculate mean, median and mode of the following data.
From the following data, calculate range and coefficient of range:
| Marks | ||||||
| No. of students |
Age is one of the factors of consideration for prostate cancer patients in deciding on treatment strategy. The following shows the ages of prostate cancer patients at a certain hospital.
| 60 | 52 | 67 | 56 | 61 | 64 | 58 | 65 | 57 | 50 |
| 42 | 52 | 50 | 56 | 56 | 62 | 64 | 69 | 55 | 47 |
Determine the first and third quartiles.
If every observation is increased by then
If every observation is increased by then:
Write two-two Merits and Demerits of range as measure of dispersion.
Write all the merits of range as measure of dispersion.
Write all the demerits of range as measure of dispersion.
The probability distribution of a random variable is as follows:
The variance of is
As the sample size increases, range also tends to
As the sample size increases, range also tends to increase though not proportionately.
As the sample size increases, _____ also tends to increase.
_____ is extremely sensitive to the size of the sample
The relation Absolute range = Relative range/Sum of the two extremes is
The relation Relative range = Absolute range / Sum of the two extremes. is
The degree of variation is designated as _____ measure of dispersion.
The amount of variation is designated as _____ measure of dispersion.
In measuring dispersion, it is necessary to know the amount of _____ & the degree of _____ .
Measures of dispersion are called averages of the ____ order.
