Practical I

Exercises

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The following packages are required for this practical:

library(dplyr)
library(magrittr)
library(mice)
library(ggplot2)

and if you’d like the same results as I have obtained, you can fix the random seed

set.seed(123)

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1. Create a scatterplot between age and bmi in the mice::boys data set

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2. Now recreate the plot with the following specifications:

• If bmi < 18.5 use color = "light blue"
• If bmi > 18.5 & bmi < 25 use color = "light green"
• If bmi > 25 & bmi < 30 use color = "orange"
• If bmi > 30 use color = "red"

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3. Create a histogram for age in the boys data set

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4. Create a bar chart for reg in the boys data set With a standard plotting device in R:

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5. Create a box plot for hgt with different boxes for reg in the boys data set With a standard plotting device in R:

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6. Create a density plot for age with different curves for boys from the city and boys from rural areas (!city).

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7. Create a diverging bar chart for hgt in the boys data set, that displays for every age year that year’s mean height in deviations from the overall average hgt

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End of Practical

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Useful References

The ggplot2 reference webpage

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