Standard errors of the mean, Mathematics

Assignment Help:

Standard errors of the mean

The series of sample means x¯1, x¯2, x¯3 ........ is normally distributed or nearly so as according to the central limit theorem. This can be described by its mean and its standard deviation. Its standard deviation is termed as the standard error.

Standard error of the mean is =  S = s/√n

Note: the above formula is satisfactory for larger samples and a large population that is n > 30 and n > 5 percent of N.

- The word 'error' is in place of 'deviation' to emphasize that variation with sample means is because of sampling errors.

- The smaller the standard error the greater the precision of the sample value.

 


Related Discussions:- Standard errors of the mean

Lines, Standard form of the line Let's begin this section off along a q...

Standard form of the line Let's begin this section off along a quick mathematical definition of a line. Any equation that can be written in the following form,

What is the probability that the dart will land in the shade, In the adjoin...

In the adjoining figure a dart is thrown at the dart board and lands in the interior of the circle. What is the probability that the dart will land in the shaded region. A

Cartesian Coordinates, In the view below of the robot type of Cartesian Coo...

In the view below of the robot type of Cartesian Coordinates, is not the "Z" and "Y" coordinates reversed? http://www.expertsmind.com/topic/robot-types/cartesian-coordinates-91038

MARKOV PROCESS, EXPLAIN HOW MARKOV PROCESS IS APPLIED IN BRAND SWITCHING?

EXPLAIN HOW MARKOV PROCESS IS APPLIED IN BRAND SWITCHING?

HELP, WHAT TWO SIX DIDGIT NUMBERS CAN YOU ADD 984,357

WHAT TWO SIX DIDGIT NUMBERS CAN YOU ADD 984,357

Example of normal distribution, The mathematics results of 20 first-year un...

The mathematics results of 20 first-year university students are given, together with their results of their performances in the year 12 semester Test and Final Assignment:

What is a system of equations?, What is a System of Equations? And its Solu...

What is a System of Equations? And its Solution? Here is an example of a system of equations (also called a simultaneous system of equations) x 2 + y = 3

Hypothesis testing of the difference between proportions, Hypothesis Testin...

Hypothesis Testing Of The Difference Between Proportions Illustration Ken industrial producer have manufacture a perfume termed as "fianchetto." In order to test its popul

Permission for xii class, Is there any class in expertsmind for second year...

Is there any class in expertsmind for second year english.?

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