Analysis and interpretation of correlations

  • Created by: StarDaze
  • Created on: 23-05-17 23:26
Correlation
Relationship between co-variables. Plotted on a scattergraph.
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Correlation coefficient
A number between -1 and +1 that represents the direction and strength of a relationship between co-variables. Is an inferential statistic.
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Perfect positive correlation
Represented on a scattergraph by a value of +1
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Perfect negative correlation
Represented on a scattergraph by a value of -1
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Strong co-variable relationship
Relationship is strong if the coefficient is close to +1 or -1
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Weak co-variable relationship (not necessarily statistically insignificant)
Relationship is weak if the coefficient is closer to 0
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Letter "R" under scattergraph
Stands for correlation coefficient
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Descriptive statistics
Used to identify trends and analyse data, e.g. graphs, tables and summary statistics (such as measures of central tendency)
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Inferential statistics
Use of statistical tests to determine if relationships or differences are statistically significant. Helps decide whether to accept or reject hypothesis.
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Other cards in this set

Card 2

Front

Correlation coefficient

Back

A number between -1 and +1 that represents the direction and strength of a relationship between co-variables. Is an inferential statistic.

Card 3

Front

Perfect positive correlation

Back

Preview of the front of card 3

Card 4

Front

Perfect negative correlation

Back

Preview of the front of card 4

Card 5

Front

Strong co-variable relationship

Back

Preview of the front of card 5
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