Stastistics

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1

Information coming form observations

Data

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The science of collecting, organizing, analyzing, and interpreting data in order to make decisions

Statistics

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A collection of ALL outcomes, responses, measurements, our counts that are of interest

Population

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A subset, or part, of a population

Sample

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A numerical description of a population characteristic

Parameter

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A numerical description of a sample characteristic

Statistic

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A branch of statistics that involve the organization, summarization, and display of data.

Descriptive statistics

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A branch of statistic that involves using a sample to draw conclusions about a population.

Inferential statistics

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____________ data consist of attributes, labels, or nonnumerical entries.

Qualitative

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_____________ data consists of numerical measurements or counts.

Quantitative

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  • Nominal
  • Ordinal
  • Interval
  • Ratio

The 4 levels of measurement

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Data at the _____________ level of measurement are qualitative only and are categorized using names, labels, or qualities having no effect on mathematical computation.

Nominal

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Data at the ___________ level of measurement are qualitative or quantitative, and can be arranged in order, or ranked, but differences between data entries are not meaningful.

Ordinal

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Data at the ____________ interval level can be ordered, and meaningful differences between data entries can be calculated. A zero entry simply represents a position on a scale; the entry is not an inherent zero ( a zero that implies "none").

Interval

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Data at the _____________ level of measurement are similar to data at the inherent level, with the added property that a zero entry is an inherent zero (a zero that implies "none").

Ratio