Standard errors of the mean, Mathematics

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.

 

Posted Date: 2/18/2013 8:11:02 AM | Location : United States







Related Discussions:- Standard errors of the mean, Assignment Help, Ask Question on Standard errors of the mean, Get Answer, Expert's Help, Standard errors of the mean Discussions

Write discussion on Standard errors of the mean
Your posts are moderated
Related Questions
what is 6/36 as two equivalent fractions 2/12 as two equivalent fractions 4/28 3/21 2/11 4/13=8/x 12/30=n/90 q/54=2/9 3/7 14/h=7/20

Jess had a book with 100 pages to read she only read 10 how many pages does she have to read?


NATURAL NUMBERS The numbers 1, 2, 3, 4.... Are called as natural numbers, their set is shown by N. Hence N = {1, 2, 3, 4, 5....} WHOLE NUMBERS The numbers 0, 1, 2, 3, 4

A 90% acid solution is mixed with a 97% acid solution to obtain 21 litres of a 95% solution. Findout the quantity of every solutions to get the resultant mixture.

can you help me with math


program of curve revolve and create a surface


An engineer has 200 resistors that he keeps in one box. Resistors are colored to help their identification, and in this box there are 30 white resistors, 50 black resistors, 80 red