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

Ascertainment bias, Ascertainment Bias A possible form of the bias, ma...

Ascertainment Bias A possible form of the bias, mainly in retrospective studies, which arises from a relationship amongst the exposure to the risk factor and the probability o

Difference in the loss in man-hours - accidents in firms, An occupational h...

An occupational health inspector was interested in determining whether there is a difference in the loss in man-hours due to accidents  by introducing a new safety programme.  The

Study guide, I have a midterm coming up the teacher is allowing us to have ...

I have a midterm coming up the teacher is allowing us to have a front & back cheats on anything we want on it. Is there a way you guys can make me one?

Determine the probability - probability example, 1. This question has multi...

1. This question has multiple parts. For a distribution of scores with = 82 and standard deviation = 2.5, find the following: (Don't forget to sketch the normal curve to help

Find karl pearson''s correlation coefficient, Find Karl Pearson's correlati...

Find Karl Pearson's correlation coefficient between the sales and expenses from the data given below:

Co-relation, Co-relation: Co-relation in this case studies the behavior how...

Co-relation: Co-relation in this case studies the behavior how each of the investment opportunity would react to any event vis – a vis each other. The same is measured in terms of

Regression, Sales from a leading motor dealership were monitored over the p...

Sales from a leading motor dealership were monitored over the past four years. The sales figures are presented in the accompanying table. Year Quarter 1 Quarter 2 Quarter 3 Quarter

financial performance using ratios, Write a report to an investor comparin...

Write a report to an investor comparing the performance by using the financial statements between two different companies

Job order costing, Bedovin company manufactures office tables and chairs us...

Bedovin company manufactures office tables and chairs using job order costing. The data given below were taken from the records as of April 30, the first month of operations. Job

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