## Introduction to Sampling

In our daily life it is quite often that we have to examine some given material. We examine fruits before... Click here to read more

From basic to higher mathematics

In our daily life it is quite often that we have to examine some given material. We examine fruits before... Click here to read more

Population: The word population or statistical population is used for all the individuals or objects on which we have to... Click here to read more

Sample: Any part of the population is called a sample. A study of the sample enables us to make some... Click here to read more

Complete Count: If we collect information about all individuals in the population, the study is called complete count or complete... Click here to read more

If it is not essential to conduct the complete enumeration, then a sample of some suitable size is selected form... Click here to read more

Sometimes the information about each and every unit of the population is required. This is possible only through the complete... Click here to read more

Sample Design: In sample studies, we have to make a plan regarding the size of the sample, selection of the... Click here to read more

Equal Probability: The term equal probability is frequently used in the theory of sampling. This term is quite often not... Click here to read more

The term probability samplingis used when the selection of the sample is purely based on chance. The human mind has... Click here to read more

Sampling is called with replacementwhen a unit selected at random from the population is returned to the population and then... Click here to read more

Sampling is called without replacement when a unit is selected at random from the population and it is not returned... Click here to read more

Simple random sample (SRS) is a special case of a random sample. A sample is called simple random sample if... Click here to read more

Suppose we are interested in the value of a population parameter, the true value of which is but is unknown.... Click here to read more

There are certain sources of errors which occur both in sample survey as well as in the complete enumeration. These... Click here to read more

Suppose we have a finite population and we draw all possible simple random samples of size by without replacement or... Click here to read more

Example: Draw all possible samples of size 2 without replacement from a population consisting of 3, 6, 9, 12, 15.... Click here to read more