Representations of Data Flashcards

1
Q

Outlier

A

A data point that doesn’t fit the general trend

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2
Q

General rule for outlier limits

A

UQ + 1.5(IQR)
LQ - 1.5(IQR)

Write boundaries when determining outliers

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3
Q

Box plot drawing method

A

Calculate the outlier bounds to see which of the highest/lowest values are valid
Use an x for an outlier and draw the whisker to the maximum/minimum non-outlier value
If not given enough, draw to the outlier boundary

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4
Q

Comparing box plots

A

Compare medians and either range/IQR ensuring it is in context

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5
Q

Histogram check

A

Check the classes are not rounded and unround if they are as continuous data must be used

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6
Q

Histogram length scale factor

A

bar width/class width

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7
Q

Histogram height scale factor

A

bar height/frequency density

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8
Q

Frequency density

A

frequency/class width

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