Measures of dispersion- measures of central tendency, Mathematics

Measures of Dispersion

- The measures of dispersion are extremely useful in statistical work since they indicate whether the rest of the data are scattered away from the mean or around the mean.

- If the data is roughly dispersed around the mean so the measure of dispersion acquired will be small hence indicating that the mean is an excellent representative of the sample data. However on the other hand, if the figures are not closely located to the mean then the measures of dispersion acquired will be relatively big indicating that the mean does not present the data sufficiently

- The generally used measures of dispersion are as

  • The semi - inter-quartile and quartile deviation
  • The 10th and 90th percentile range
  • Variance
  • The range
  • The absolute mean deviation
  • The standard deviation

a) The range

- The range is explained as the difference between the smallest and the highest values in a frequency distribution. This measure is not extremely efficient since it utilizes only two values in a described frequency distribution. Conversely the smaller the value of the range, the less dispersed the observations are from the arithmetic mean (a.m.) and vice versa

- The range is not generally used in business management since two sets of data may yield the similar range but end up containing different interpretations regarding the degree of dispersion

b) The absolute mean deviation

- It is useful measures of dispersion since it makes use of all the values described see the given illustration;

Posted Date: 2/16/2013 6:33:52 AM | Location : United States







Related Discussions:- Measures of dispersion- measures of central tendency, Assignment Help, Ask Question on Measures of dispersion- measures of central tendency, Get Answer, Expert's Help, Measures of dispersion- measures of central tendency Discussions

Write discussion on Measures of dispersion- measures of central tendency
Your posts are moderated
Related Questions
If 967.234 is divided by 10, how will the decimal point move? It will move one place to the left. While dividing by multiples of 10, the decimal point is moved to the left acco

Thorwarth M., Arisha, A. and Harper P., (2009) Simulation model to investigate flexible workload management for healthcare and servicescape environment, Proceedings of the 2009 Win

What is 2 5 ? 2 5 = 2 ×2 ×2 ×2 ×2 = 32

Test of hypothesis about the population mean When the population standard deviation (S) is identified then the t statistic is defined as             t = ¦(x¯ - µ)/ S x¯ ¦


Reason for why limits not existing : In the previous section we saw two limits that did not.  We saw that did not exist since the function did not settle down to a sing

please i need the solution for halm''s differential equation

1. Four different written driving tests are administered by a city. One of these tests is selected at random for each applicant for a drivers license. If a group of 2 women and 4 m

Write a function that computes the product of two matrices, one of size m × n, and the other of size n × p. Test your function in a program that passes the following two matrices t

Apply the concept of partial fraction and add the corresponding terms. The terms will get cut automatically leaving the first and last term