Statistical Graphs

Which charts and/or graphs are BEST for comparing categorical data?

Select all that apply.

• Pie charts

• Stem plots

• Dot plots

• Histograms

• Two-way tables

Coach Carter recorded the number of points his players scored during the basketball season. How many players are on his team?

• 4

• 6

• 13

• 39

Assuming the following plot records the grades my students made last semester, how many of my students made a "B" (80-89) in my course?

• 6

• 7

• 8

• 9

Select the type of graph pictured here, and which type of data it represents.

• Graph: stem plot;

  Data: categorical

• Graph: stem plot;

  Data: quantitative

• Graph: dot plot;

  Data: categorical

• Graph: dot plot;

  Data: quantitative

• Graph: histogram;

  Data: categorical

Which statement(s) are correct based on this graph?

Select all that apply.

• The most common number of defects per hour is 3.

• The most common number of defects per hour is 16.

• Most of the time there are at least 3 defects per hour.

• When Henry works, there are 12 defects per hour.

A pie chart tells us what portion (percentage) of the data falls into each category.

• True

• False

How many people were surveyed all together?

• 320

• 125

• 160

• 80

The dot plot shows the distances, in miles, cyclists completed on Saturday. What percent of the cyclists went at least 11 miles?

• 1%

• 10%

• 11%

• 100%

The histogram shows the ages of people in a community chorus. How many people in the chorus are younger than 40 years old?

• 3

• 15

• 31

• 60

Which statements are true?

Select all that apply.

• Histogram presents categorical data whereas bar graph shows quantitative data.

• The histogram is drawn in such a way that there is no gap between the bars.

• The bars in a bar graph could be rearranged without affecting the data.

• All bars in a bar graph must be the same color.