7.2. Bar Graphs, Histograms and Stem-and-Leaf Plots http://www.ck12.org
a. What is displayed on the vertical axis?
b. What scale is used on the vertical axis?
c. What is displayed on the horizontal axis?
d. Which city had the least amount of snow in 2008?
e. Which city had the most snow in 2008?
f. Which two cities showed little difference in the amount of snow they received?- Do some research in your area and create a bar graph similar to that in question one, concerning weather for
cities in your country. - For the following graph, answer the questions below.
a. What is the total percent of people that work in the transportation department?
b. Why do you think this total is not 100%?
c. Which age group has the most people that work in the transportation department?
d. Which age group has the fewest number of people who work in the transportation department?- For each of the following examples, describe why you would likely use a bar graph or a histogram.
a. Frequency of the favorite drinks for the first 100 people to enter the school dance.
b. Frequency of the average time it takes the people in your class to finish a math assignment.
c. Frequency of the average distance people park their cars away from the mall in order to walk a little
more. - Prepare a histogram using the following scores from a recent science test. When done, use a different colour
pencil and draw a frequency polygon on your graph. Does the area under your frequency polygon look equal
to the area colored in your histogram?
TABLE7.11:
Score (%) Tally Frequency
50-60 |||| 4
60-70 ||||| 6
70-80 |||| ||||| 11
80-90 ||||||| 8
90-100 |||| 4