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Stats Chap 1

Terms from Section 1.1, 1.2

TermDefinition
Data Consists of info coming from observations, counts, measurements, or responses 2 types; quantitative & qualitative
Statistics 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 A subset or part of the population
Parameter Numerical description of a Population characteristic
Statistic A numerical description of a Sample characteristic
Descriptive Statistics Involves organizing, summarizing, and displaying data (a branch of statistics)
Inferential Statistics Using a Sample data to draw conclusions about a Population (a branch of statistics)
Qualitative Data Consists of labels, attributes, or numerical entries
Quantitative Data Numerical measurements or counts
Nominal Level of Measurement Qualitative only. Categorized using labels. No mathematical computations can be made Example: Describing movies by genre
Ordinal Level of Measurement Qualitative or Quantitative. Data can be arranged in order and ranked. Differences between data entries is NOT meaningful Example: Top 5 most popular fruits in the US
Interval Level of Measurement Quantitative only. Data can be ordered. Differences between data has meaning. 0 represents a position on a scale (does not imply "none") Example: List of years this baseball team won the World Series
Ratio Level of Measurement Zero means "none." A ration of 2 data values can be formed. One data value can be expressed as a multiple of another. Whole #'s only. List of times this Superhero team defeated this villain
Created by: Tain45
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