Percent Bar Graphs Practice
Complete this assessment to review what you've learned. It will not count toward your grade.
3 of 53 of 5 Items
Question
Teranda is a medical researcher. She asks 25 subjects their blood type and makes the following relative frequency table to show the results:
Blood Type Frequency Relative Frequency
A 10 1025 = ?%
B 4 425 = ?%
AB 2 225 = ?%
O 9 925 = ?%
Then, Teranda makes a percent bar graph to summarize her results. How far up do the bars for Type A and Type B go?
(1 point)
Type A =
%, Type B =
%
Skip to navigation
page 12 of 13
To find the percent for each blood type, we need to divide the frequency by the total number of subjects (25) and then multiply by 100 to get the percent.
For blood type A:
Relative Frequency = 10/25 = 0.4
Percent = 0.4 * 100 = 40%
For blood type B:
Relative Frequency = 4/25 = 0.16
Percent = 0.16 * 100 = 16%
So, the bars for Type A and Type B should go up 40% and 16% respectively on the percent bar graph.
Use the table to answer the question.
Language Frequency Relative Frequency
German 3 325= ?%
Mandarin 5 525=?%
Spanish 17 1725=?%
Hiroko asks 25 friends to identify the foreign language they study. She makes the relative frequency table to show the results. Hiroko also makes a percent bar graph to describe the distribution of her dataset. What do the bars show?
(2 points)
German bar = %, Mandarin bar = %, and Spanish bar = %.