Data Science Chapter 3

What is NOT an example of a distribution?

• 100 students' heights

• Total area of Finland

• Forests

• The happiness ratings of the nations in South America

What goes on the x axis of a histogram?

• variable

• count

• density

• value

What is on the y axis of a histogram?

• count

• variable

• value

• density

What argument do I use to change the outline color of the bars in a histogram or bar graph?

• color=

• fill=

• outline=

• border=

What argument do I use to change the color of the inside of the bars on a histogram or a bar graph?

• fill=

• color=

• inside=

• internal=

What are bins?

• intervals on the x axis of a histogram

• a value on the x axis of a histogram

• intervals on the x axis of a bar graph

• a value on the x axis of a histogram

What is the default number of bins R makes when you use the function gf_histogram()?

• 30

• 10

• 5

• 1

What function do I have to add on to a histogram function to change the labels of a histogram?

• gf_labs()

• label()

• title()

• axes()

When I want to change the labels of a histogram, what do I need to use between gf_histogram() and the function for changing the labels of the histogram?

• %>%

• %<%

• %%

• %=%

What function would I use if I wanted to create a histogram with proportion on the y axis instead of frequency?

• gf_dhistogram()

• gf_hhistogram()

• gf_phistogram()

• gf_rhistogram()