Statistics

3. the sum of upper and lower limits of the class divided by 2
4. the collection of all outcomes, responses, measurements, or counts that are of interest
11. a sampling technique used when "natural" but relatively heterogeneous groupings are evident in a statistical population
12. a quantity calculated to indicate the extent of deviation for a group as a whole.
13. an investigation of one or more characteristics of a pop
14. involves the organization, summarization, and display data
16. a sample in which every possible sample of the same size has the same chance of being selected.
18. a sample in which each member of the pop is assigned a number.
19. a treatment is applied to part of a population and responses are observed
20. the average of the numbers: a calculated "central" value of a set of numbers. To calculate: Just add up all the numbers, then divide by how many numbers there are.

1. the science of collecting, organizing, analyzing, and interpreting data in order to make decisions
2. one in which every member of the pop has an equal chance of being selected
5. involves using sample to draw conclusions about a population
6. very important statistical data distribution pattern occurring in many natural phenomena
7. a count or measure of an entire pop.
8. consists of information coming from observations, counts, measurements, or responses
9. a subset of a population
10. the use of a mathematical or physical model to reproduce the conditions of a situation or process
15. a numerical description of a population characteristics
17. involves using sample to draw conclusions about a population