L14: Presentation Of Quantitative Data Flashcards

1
Q

What does a scattergram show?

A
  • Correlations between co-variables

- Indicates strength/direction of correlation

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2
Q

What does a bar chart show?

A
  • Discrete variables
  • Height of bar = frequency
  • Spaces left between bars
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3
Q

What do distributions show?

A
  • Normal distribution: data reflects bell shaped curve (symmetrical)
  • Mean, median, mode all occupy the same midpoint of the curve
  • Ends never touch the x axis
  • Positive skew = left side
  • Negative skew = right side
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