1. A way of collecting, organizing, and interpreting data
Statistics
A way of collecting, organizing, and interpreting data

2. population
A group that is being studied as part of a statistics ‘experiment’
Examples:
A population can be all the residents of a city or a neighborhood
All the students in a school
All the employees of a company

3. sample
A small group chosen for study that is representative of a larger population

4. survey
A way of collecting information from a sample

5. unBiased samples
Simple Random Sample
Systematic Random Sample

6. Biased samples
Convenience Sample
Voluntary Response Sample

7. When collecting data:
It is a good practice to collect multiple samples of data.
You then can compare the results of the different samples.