Some important questions with answers on measures of dispersion are given, which are drafted by expert commerce teachers from the latest version of CBSE (NCERT) books.
Important Questions – Measures of Dispersion
Question 1
Define dispersion.
Answer:Â
Dispersion is the measure of the extent to which different items tend to dispense away from the central tendency.
Question 2
What is the coefficient of dispersion?
Answer:Â
The coefficient of dispersion shows different data percentages or relative values. It is known as a relative measure of dispersion.
Question 3
Define range.
Answer:
Range is the variance between the lowest and the highest values in a series.Â
Range = Highest value in the series – Lowest value in the series
Question 4
Explain the interquartile range.
Answer:
The difference between the first quartile (Q1) and the third quartile (Q3) of a series is known as the interquartile range.
Question 5
What is the quartile deviation?
Answer:
The half of the interquartile range is quartile deviation. It can also be mentioned as a semi-interquartile range.
Question 6
What is the formula for calculating the coefficient of quartile deviation?
Answer:Â
For calculating the coefficient of quartile deviation, the following formula is applied:
Q3 − Q1/Q3 + Q1
Question 7
Define mean deviation.
Answer:Â
The average of the deviations of all the principles taken from some average value (mean, median, mode) of the series by ignoring the signs (+ or -) of the deviation is known as the mean deviation.
Question 8
What is standard deviation?
Answer:Â
It is the square root of the arithmetic mean of the squared deviations of the items from their mean value.
Question 9
What is a Lorenz curve?
Answer:Â
A Lorenz curve is a curve that shows the actual distribution deviation (of income or wealth) from the line exhibiting equal distribution.
Question 10
Define variance.
Answer:Â
Variance is another measure of dispersion. It is the square of the standard deviation.
Stay tuned for questions papers, sample papers, syllabus, and relevant notifications on our website.
Also check: Statistics MCQs
Comments