Discrete Standard Deviation, Statistics, Basic Statistics

Assignment Help:
Discrete Standard Deviation

For calculating standard deviation in discrete series any of the following methods may be applied

(1) Actual mean method.

(2) Assumed mean method.

(3) Step deviation method.

(a) Actual mean methods when this method is applied deviations are taken from the actual mea we find (X-X) and denote these deviations by x. These deviations are then squared and multiplied by the respective frequencies. The following formula is applied:

s = v S fx2 /N where x = (X – X)

However in practice this method is rarely used because if the actual mean is in fractions the calculations take a lot of time.

(b) Assumed mean method when this method is used the following for mule is applied

S = v {fd2 / N – ({ fd/N)2 where d = (x – A)

Steps

Take the deviations of the items form an assumed mean and denote there deviation by d.

Multiply these deviations by the respective frequencies and obtain the total { fd.

Obtain the squares of the deviations calculate d2. Multiply the squared deviations by the respective frequencies an obtain the total {fd2.

Substitute the value in the above formula

Related Discussions:- Discrete Standard Deviation, Statistics

Statistic for business, Present the survey methodology which is going to be...

Present the survey methodology which is going to be used by describing primary and secondary data collection methods, population, sampling frame and sampling method/s, sample size

Data statistics in decision making, I need help with mystatlab assignment, ...

I need help with mystatlab assignment, can anyone assist me?

Operation research, Meaning and solving example using north-west corner in ...

Meaning and solving example using north-west corner in Transportation problem

Hypothesis and statistical test, College administrators across the country...

College administrators across the country have become very concerned after noticing an increase in the number of deaths in college students from binge drinking.  Several psychologi

Calculate the total pv of the tax shield, Nortel is considering the purchas...

Nortel is considering the purchase of a new call routing system. The system will cost $50M to purchase, an additional $7M to install, and will last for 30 years. The CCA rate assoc

Describe the assumptions conducting test, Conduct a test to determine if th...

Conduct a test to determine if the proportion of males that responded true to the statement in the survey that, "Whole foods (i.e. raw vegetables and meats) contain sodium," is dif

Interpolation and extrapolation, What is meant by interpolation and extrapo...

What is meant by interpolation and extrapolation. State the assumptions used for interpolation and extrapolation

#title.Arithmatic mean., If the mean of first 5 no. is 60 and mean of last ...

If the mean of first 5 no. is 60 and mean of last 5 no. is 55 then what is the 5th no.

Simple data analysis&comparison, Progect Guid: PROJECT 1: SIMPLE DATA ANA...

Progect Guid: PROJECT 1: SIMPLE DATA ANALYSIS & COMPARISON REPORT GUIDELINES This document contains general guidelines for the preparation of the Project Report I. Please note,

Budgetary control, Budgetary control The manage or management of a governm...

Budgetary control The manage or management of a governmental component in agreement with an approved budget for the purpose of keeping expenditures within the limits of available

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd