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Stats - Chapter 1

Statistics

TermDefinition
Statistics the science of conducting studies to collect, organize, summarize, analyze, and draw conclusions from data
Descriptive collect, organize, summarize; will involve and average
Inferential analyze, draw conclusions, making predictions
Population consists of all subjects that are being studied
Sample a group of subjects selected from a population
Discrete countable
Continuous measurable
Boundaries one additional decimal place and always ends up with 5; upper and lower
Nominal names not ranked
Ordinal nominal but can be ranked
Interval ordinal and intervals are consistent
Ratio interval and has a true zero
Random random number generators
Systematic goes by a system: every kth subject
Stratified you decide how to divide
Cluster use already formed groups; geographic
Convenient easy
Observational study no intervening, just watching
independent variable explanatory
dependent variable response/outcome
cofounding variable influences outcome but can't be separated from the explanation
Created by: ammorale
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