Skills Bank
Textbook
6 Math Nelson
Chapter
Chapter 3
Section
Skills Bank
Solutions 11 Videos

A music Web site asked 20 customers how many hours they listened to music the previous week. The chart shows the results.

a) Organize the data into a tally chart with intervals.

b) Sketch a graph to display the data. Justify your choice of graph.

c) Would the results of the survey represent the number of hours of music listened to by everyone? Explain your reasoning. Q1

a) Describe the location of each point plotted on the graph. Use coordinate pairs

b) Describe the location of two other points that are on the line. Use coordinate pairs. Q2

Emily bounces a basketball at a steady speed for 2 min. Alexis records the number of bounces after every 20 s. The table shows their results.

a) Draw a line graph using the data in the table.

b) Use the graph to predict the number of bounces after 50 s.

c) Predict the number of bounces after 3 min. Extend the graph to check your prediction. Q3

The scatter plot shows the number of attempted and completed passes by quarterbacks in the CFL. Does the scatter plot show that the more passes a quarterback attempts, the more completed passes he makes? Use the graph to explain your reasoning. Q4

Determine the mean and the median of each set of data.

1,0,5,5,7,2,4,2,3,3,5,7,99

Q5a

Determine the mean and the median of each set of data.

100, 99, 97, 98, 101, 96, 95, 98

Q5b

Determine the mean and the median of each set of data.

2,8,6,10,10,10,10

Q5c

Determine the mean and the median of each set of data.

250, 250, 246, 247, 251, 240, 242, 242

Q5d

Austin’s class measured the masses in kilograms of backpacks carried by 10 Grade 1 students, 10 Grade 3 students, and 10 Grade 6 students. Compare means or medians to determine which grade carries the heaviest backpacks. Q6

A Web site asked people the question, “Do you listen to the commentaries on DVD movies?” The graph shows the results.

a) Explain how the appearance of the graph would change if you doubled the size of each unit of the scale on the vertical axis.

b) Explain how the appearance of the graph would change if you halved the size of each unit of the scale on the vertical axis.

c) Explain how the appearance of the graph would change if you combined the first two categories and the last two categories. Q7

Hannah measured the number of heartbeats in 1 min of 12 girls when they were resting and when they were exercising.

a) Determine the median resting heart rate and the median exercise heart rate.

b) Use the two medians to create a Carroll diagram.

c) Is there a relationship between a student’s resting heart rate and exercise heart rate? Use your Carroll diagram to justify your reasoning. 