Statistics. Descriptive Mathematics. Introductory Video. https://www.youtube.com/watch?v=edEXEyvG4Wk https://www.youtube.com/watch?v=84H8HNV9mk0. Data vs. Statistics. Data is: . information that is gathered from a population (or a sample of the population). Statistics are:.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
information that is gathered from a population (or a sample of the population).
numbers that gives information about a population (or a sample of the population).
Examples of statistics are:
mean, median, mode, range, variance, and standard deviation.
The unit of population is whatever you are counting: there can be a population of people, a population of households, a population of events, institutions, transactions, and so forth. Anything you can count can be a population unit.
Survey research is based on sampling, which involves getting information from only some members of the population.
Imagine a complete list of the population, with one line for every member: for example, a list of 1500 members of an organization, numbered from 1 up to 1500. Suppose you want to survey 100 of them. To draw a simple random sample, choose 100 different random numbers, between 1 and 1500. Any member whose number is chosen will be surveyed. If the same number comes up twice, the second occurrence is ignored, as nobody will be surveyed more than once.
When data is recorded for continuous variable, there are likely to be many different values.