Exam 1 Study Guide –
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Rationales
Included
, Statistics is the science of collecting, organizing, summarizing, and analyzing
information
Data describes... describes characteristics of an individual
Data is a fact or proposition to draw a conclusion/ make a decison
Descriptive statistics describes data through numerical summaries, tables and graphs
A statistic is a ... numerical summary based on a sample
Inferential statistic use methods that take results from a sample, extends them to the
population, and measures the reliability of the result
The process of Stats (4) 1. identify research/ objective
2. collect data
3. describe data
4. perform inference
Population the entire group of individuals to be studied
Individual the person or object that is a member of the population being studied
Sample the subset of the population that is being tested
Parameter a numerical summary of a population (information from entire group)
Statistic a numerical study of a sample (information from the subgroup)