Analyzing Categorical Data with Mosaic Plots and Segmented Bar Charts

What are antibodies primarily responsible for in the immune system?

• Causing infections

• Producing white blood cells

• Suppressing the immune response

• Recognizing and fighting infections

How many adults were found to have antibodies?

• 114

• 95

• 120

• 6

What percentage of children tested had antibodies?

• 95%

• 90%

• 10%

• 40%

Which age group had the lowest percentage of antibodies?

• All had the same percentage

• Children

• Adults

• Infants

What visual tool was first introduced to represent the data?

• Pie chart

• Line graph

• Segmented bar chart

• Mosaic plot

What does the blue color in the segmented bar chart represent?

• Percentage of infants

• Number of people not tested

• Presence of antibodies

• Lack of antibodies

In the mosaic plot, what does the width of the bar represent?

• Percentage without antibodies

• Age group

• Number of people tested

• Percentage of antibodies

Which group makes up a large chunk of those who don't have antibodies according to the mosaic plot?

• All equally

• Infants

• Children

• Adults

What additional information does the mosaic plot provide over the segmented bar chart?

• Age groups

• Exact percentages

• Sample sizes

• Color representation

Why might it be useful to use a segmented bar chart or mosaic plot in epidemiological studies?

• To calculate exact percentages

• To understand data relationships

• To predict future diseases

• To produce statistical models