Mean Deviation, Statistics, Basic Statistics

Mean Deviation

The two methods of dispersion discussed above namely range and quartile deviation are not measure of dispersion in the strict sense of te term because they do not show the slatterns around an average however to study the formation of a distribution we should take the deviations from an average. The two other measures namely the average deviation and the standard deviation help us in achieving this goal the mean deviation is also known as the average deviation. It is the average difference between the items in a distributing and the median or mean of that series. Theoretically there is an advantage in taking the deviations from median because the sum of deviation of item from median is minimum when signs are ignored. However in practice the arithmetic mean is more frequently used uncalculating the value of average deviation and this is the reason why it is more commonly called men deviation. In any case the average used must be clearly stated in a given problem so that any possible confusion in meaning is avoided.

Computation of mean deviation-individual observations

If X2 X1 X3 XN are N given observation then the deviation about an average A is given by

M.D. = 1/n S| X – A |

1/N S |D| or S | D| / N

Where |D| = X – A | read as mod (X-A) is the modulus value or absolute value of the deviation ignoring plus and minus signs.

Coefficient of M>D = M>D / median
Posted Date: 1/31/2012 11:41:21 PM | Location : United States

Related Discussions:- Mean Deviation, Statistics, Assignment Help, Ask Question on Mean Deviation, Statistics, Get Answer, Expert's Help, Mean Deviation, Statistics Discussions

Write discussion on Mean Deviation, Statistics
Your posts are moderated
Related Questions
What is probability 0.10 called?

Allowable moving costs Except as mentioned in Subsection 60.20.20 and within certain restrictions, allowable moving costs involve the prices associated with moving family products

describe the air wedge experiment to determine the thickness of a wire

state the condition followed by dimple truss.

#questKody Corporation uses a job-order costing system with a plantwide overhead rate based on machine-hours. At the beginning of the year, the company made the following estimates

define standard deviation. their purpose,uses,advantages nd disadvantages,examples ,formula for grouped and ungrouped.

This week, you have learned about how to use Cronbach's alpha as a measure of scale reliability. In this Application, you will calculate Cronbach's alpha for provided data. To p

A file on DocDepot in the assignments folder on doc-depot called bmi.mtp contains data on the Body Mass Index (BMI) of a population of Ottawa residents. The first column identifies

Individual Music scores Mathematics scores Angela 2 8 Arthur 6 3 Peter 4 9 Mike 5 7 Barbara 7 2 Jane 7 3 Jean 2 9 Ruth 3 8 Alan 5 6 Theresa 4 7 Assess the data using a Correlation

does interest realized come under debit or credit side of trial balance pleases i need answer