GATE (Graduate Aptitude Test in Engineering) Psychology Research Methods and Statistics-Statistics in Psychology Study Material (Page 6 of 9)

Subscribe now to access pointwise, categorized & easy to understand notes on 369 key topics of GATE (Graduate Aptitude Test in Engineering) Psychology covering entire 2021 syllabus. With online notes get latest & updated content on the device of your choice. View complete topic-wise distribution of study material. *Unlimited Access, Unlimited Time, on Unlimited Devices*!

View Features or View Sample.

Rs. 550.00 -OR-

How to register? Already Subscribed?

# Sampling Techniques: Laws of Statistics

Selection of part of an aggregate to represent the whole aggregate is known as sampling. Sampling, a long established practice that helps in evaluating, recognizing, and selecting candidates from the universe for taking decisions.

The aim of sampling is to select a set of items (or individuals) which represent the entire population.

## Laws of Statistics

Statistics enables drawing conclusions about entire population based on sampled data. It checks validity of sampling, understand…

… (221 more words) …

Subscribe & login to view complete study material.

# Sampling Techniques: Sample Size and Sampling Fraction

## Sample Size and Sampling Fraction

Sampling involves a compromise between precision and economy of the effort. The smaller the sample, and to a lesser extent, the smaller the sampling fraction, the wider the margin of error of any estimate made from it. In fact, if the margin of error that can be tolerated for a particular purpose is known, it is possible to calculate the minimum sample size required. Standard error of mean of the samples, . Where is the standard deviation of the population and is the sample size. As increases standard error of mean decreases th…

… (154 more words) …

Subscribe & login to view complete study material.