Podcast
Questions and Answers
Histograms and density plots convey identical information.
Histograms and density plots convey identical information.
False
Density plots can represent multiple groups by using color to differentiate between categories.
Density plots can represent multiple groups by using color to differentiate between categories.
True
Density plots are always preferable over histograms.
Density plots are always preferable over histograms.
False
Scaling is essential when variables have different units of measurement.
Scaling is essential when variables have different units of measurement.
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The "std" scaling method divides by the mean to normalize values.
The "std" scaling method divides by the mean to normalize values.
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"Globalminmax" scaling sets a fixed range for data based on global minimum and maximum values.
"Globalminmax" scaling sets a fixed range for data based on global minimum and maximum values.
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Scaling is unnecessary when all variables are measured in the same unit.
Scaling is unnecessary when all variables are measured in the same unit.
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"Uniminmax" scaling ensures that all values fall between zero and one.
"Uniminmax" scaling ensures that all values fall between zero and one.
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To create a histogram in R, the command hist(data) can be used.
To create a histogram in R, the command hist(data) can be used.
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The function highlight() can be used in R to apply brushing to parallel coordinates.
The function highlight() can be used in R to apply brushing to parallel coordinates.
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