Name________________________________________
Date_____________________
Period_______
Stem-and-Leaf, Histogram, and Circle Graph Practice
1. Below is the data for how many minutes students spent on math homework last night. Use the data to
draw a stem-and-leaf plot:
47, 56, 55, 46, 32, 67, 49, 38, 53, 58, 49, 65, 45, 39, 49, 52, 51, 61
2. What is the mean amount of minutes students spent on math homework? The median amount? Show
your work.
3. What is the range of the data? The mode?
4. The histogram below show the distribution of scores of 30 students on a math test.
Complete the frequency table below using the data in the histogram.
5. The data below consists of the weights (in pounds) of 24 high school students:
195, 206, 100, 98, 150, 210, 195, 106, 195, 108, 180, 212, 104, 195, 100, 216, 99, 206, 116, 142, 100, 135, 98, 160
a. Would 20-pound intervals (i.e. 80-99 and 100-119) or 50-pound intervals (i.e. 50-99 and 100-149)
make more sense for this set of data? Why?
b. Using this data and your chosen interval, complete the table below and construct a histogram.
Interval
Tally
(Frequency)
6. The test scores for 10 students were 61, 67, 81, 83, 87, 88, 89, 90, 98, and 100. Which frequency table
below is accurate for this set of data?
7. The Statistical Data Bureau published an analysis of incomes and expenditures of 100 average families
throughout the United States. The circle graph below represents the Rosen family's monthly budget.
a. If their total monthly income is $1820, how much money does the Rosen family spend each month
on food? On housing? Show your work.
b. What is the measure of the central angles for each category? Show your work.
8. “On Ice” is a small shop next to the skating pond that Barney opens on weekends. Use the data for
Saturday’s sales to help Barney make a graph in the circle below. Start by finding the degree measure
of each region. Show your work to find the angle measures.
Saturday’s Sales
Item
Percent Angle Measure
skate guards
30%
hats
15%
hot chocolate
20%
laces
10%
gloves
15%
ear muffs
10%