VCU STAT 210 - Final Exam Study Guide (20 pages)

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Final Exam Study Guide



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Final Exam Study Guide

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An overview of the material presented in preparation for the cumulative final in statistics.


Pages:
20
Type:
Study Guide
School:
Virginia Commonwealth University
Course:
Stat 210 - Basic Practice of Statistics
Basic Practice of Statistics Documents

Unformatted text preview:

STAT 210 1nd Edition Final Exam Study Guide Lecture 1 August 25 Statistics Science involving the extraction of information from numerical data collected from an experiment or sample Population the whole group of individuals which the researcher wants information about Parameter A characteristic of the population that a researcher wants to measure Typically denoted with Greek letters Sample A subset of the population that information is gathered from Statistic A measure calculated from data in a sample that is expressed numerically Typically denoted with symbols from regular English letters Inference A statement about a population based on the data collected in a sample Distribution A list of all possible values a characteristic can have and the number of times each value occurs Descriptive Statistics Branch of statistics dealing with ways to describe a characteristic of a population numerically or graphically and ways to compare characteristics Inferential Statistics Branch of statistics in which data and statistics are calculated from a sample to make statements about a population Replication Repetition repeated measurements Constant A characteristic whose measurements do not change when the trials are repeated Variable A characteristic whose measurements change when trials are repeated Qualitative or Categorical Variable A variable whose measurements do not vary in degree only in kind or name Quantitative Variable A variable whose measurements vary in magnitude when trials are repeated Discrete Quantitative Variable A quantitative variable whose measurements can infer only a few possible values Continuous Quantitative Variable A quantitative variable whose measurements can infer many values in a line interval Usually a measurable quantity or calculation like rates or percentages Lecture 2 August 27 Representative Sample Characteristics of the sample mimic the characteristics of the population Bias Exists when certain subjects outcomes are favored over others



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