Chap. 1: Introduction to Statistics 1. An Overview of Statistics

Data Consist of information coming from observations, counts, measurements, or responses.

Statistics Is the science of collecting, organizing, analyzing, and interpreting data in order to make decisions

Population The collection of all outcomes, responses, measurements, or counts that are of interest

Sample Is a subset of a population Venn diagram example

Parameter A number that describes a population

Statistic A number that describes a sample

Descriptive Statistics Is a branch of statistics that involves the organization, summarization, and display of data.

Inferential Statistics The branch of statistics that involves using a sample to draw conclusions about a population. One basic tool for this is probability