Stratified sampling, Mathematics

Stratified sampling

In stratified sampling case the population is divided into groups in such a way that units in each group are as same as possible in a process called stratification. The groups are called strata. Simple random samples from each of the strata are collected and also combined into a simple. This technique of collecting a sample from a population is named as stratified sampling. Stratification may be by age, occupation income group and so on.

 

Posted Date: 2/18/2013 8:06:37 AM | Location : United States







Related Discussions:- Stratified sampling, Assignment Help, Ask Question on Stratified sampling, Get Answer, Expert's Help, Stratified sampling Discussions

Write discussion on Stratified sampling
Your posts are moderated
Related Questions
Determine the mean of the subsequent numbers: Example: Determine the mean of the subsequent numbers: 5, 7, 1, 3, 4 Solution: where x'          =

dans chaque cas recris l expression sous la forme d un rappot reduit 5kg/600g

1. Using suffix trees, give an algorithm to find a longest common substring shared among three input strings: s 1 of length n 1 , s 2 of length n 2 and s 3 of length n 3 .

A company is setting up an assembly line to produce 100 units/hour. The table shown below identifies the work elements, times, and immediate predecessors. a)      What cycle tim

Jack and his mother paid $11.50 for tickets to the movies, and adults tickets cost $4.50 more than a child ticket what was the cost of each ticket?

Find out the general formula for the tangent vector and unit tangent vector to the curve specified by r → (t) = t 2 i → + 2 sin t j → + 2 cos t k → . Solution First,

mean absolue deviation

Consider the system of linear equations X + ay = 1 2x + 8y = b Where a and b are real numbers. (a)  Write out the augmented matrix for this system of linear equations.

state tha different types of models used in operations research.

finite or infinite 1]A={4,5,6,....}