STATISTICS Lecture Notes - Simple Random Sample, Stratified Sampling, Standard Deviation
Document Summary
Sampling-basic concepts- sampling vs complete enumeration parameter and statistic-sampling methods-simple random sampling and stratified random sampling. It may be population of plants, population of insects, population of fruits, etc. When the number of observation can be counted and is definite, it is known as finite population: no. of plants in a plot, no. of farmers in a village, all the fields under a specified crop. When the number of units in a population is innumerably large, that we cannot count all of them, it is known as infinite population: the plant population in a region, the population of insects in a region. A list of all units of a population is known as frame. A summary measure that describes any given characteristic of the population is known as parameter. Population are described in terms of certain measures like mean, standard deviation etc. These measures of the population are called parameter and are usually denoted by greek letters.
