1_Lecture1.2_Introduction_0121_Spring11

1_Lecture1.2_Introduction_0121_Spring11 - I. Introduction...

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1 PSY207 B Spring 2011 Psychological Statistics I. Introduction to Statistics….more Objectives You should be able to. ... • Define data • and tell the difference between qualitative and quantitative data • and tell the difference between discrete and continuous data You should be able to. ... • Define the four scales of measurement and tell the difference among them: •1 . nominal •2 . ordinal •3 . interval •4 . ratio Data • Collection of numerical observations from a survey or experiment • a single datum is a raw score Qualitative Data • A single observation represents a class or category
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2 Quantitative Data • A single observation is an amount or a count • E.g., reaction time (RT), weight • Political party? • Blood Pressure? • Body temperature? • Gender? Qualitative or Quantitative? Discrete Data • Discrete data consist of a countable number of possible values • E.g., number of cars in a parking lots; number of integers Continuous Data • Continuous data consist of an infinite number of possible values on a scale in which there are no gaps or interruptions
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This note was uploaded on 04/20/2011 for the course PSY 207 taught by Professor Pfordesher during the Spring '07 term at SUNY Buffalo.

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1_Lecture1.2_Introduction_0121_Spring11 - I. Introduction...

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