Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Measures of Dispersion (Variation)
A measure of dispersion is to measure the spread among values of observations in a data set. There are three commonly used measures of dispersion: variance, range and standard deviation.
Range
Range is the easiest measure of dispersion. It is the difference amongst the largest and the smallest value of observations in a data set.
Range = Largest value -Smallest value
Example
Calculate the range of the following data:
Students Exam marks
A 80
B 67
C 44
D 57
E 92
F 79
Solution:
= 92 - 44 = 48
The range is very easy to compute, but because it depends only on the largest and the smallest values, it is not as useful as the other measures of the variation which use every value.
From the following information related to XYZ Ltd.; you are required to find out (a) contribution (b) Break-even point in units (c) Margin of safety, (d) Profit Total Fixed Costs
A small specialized workshop is used to perform periodic check-up on some high-tech devices. The check up is made in three stages whose durations are independent random variables w
Methods of measuring secular trend
What is the probability 0.10 called?
Your friend Jose is trying to decide whether to buy or lease his next vehicle. He has gathered information about each option but is not sure how to compare the alternatives. Purcha
At a tennis tournament a statistician keeps track of every serve. The statistician reported that the mean serve speed of a particular player was 102 miles per hour (mph) and the st
Proton-electron hypothesis: this was put forward in the year 1930 to account for the emission of alpha and beta particles from the nuclei of radioactive elements. The positive char
order tomatoes in crates of 25 kg and he is able to stock a maximum of four crates or 100 kg of tomatoes. His experience taught him that the daily demand ranges from 0 to100 kg of
what isweight and why is it necerary to calculate its index numbet
What are Saturn’s rings like? - Saturn’s rings are made of tiny icy objects ranging from particles to boulders each orbiting Saturn independently like a tiny moon. They lie in S
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd