11-5 Solve It!
You travel east and west at the speeds shown. Is your average speed for
the round trip 55 mi/h, less than 55 mi/h, or greater than 55 mi/h?
Answer without calculating, and explain your reasoning.
This is not your
average average!
60 mi/h
50 mi/h
West
East
11-5 Lesson Quiz
1. Which is an outlier for this data set:
170 210 192 105 188 179 195?
2. Do you UNDERSTAND? The table shows the
Florida
Florida State
heights in inches of men’s tennis rosters.
Find the mean, mode, range, median,
quartiles, and interquartile ranges.
76
69
74
74
74
69
74
73
73
68
3. The data shows the ages of passengers on a
74
71
71
71
75
70
70
74
city bus. What value is at the 75th percentile?
8 9 12 15 15 19 22 28 35 35
39 44 45 45 47 48 50 52 55 56
Answers
Solve It!
Lesson Quiz
Average speed will be less than
55 mi/h; it takes longer to travel
the same distance at a lower
speed, so the lower speed has
greater weight.
1. 105
2. Florida: mean 5 73.4;
mode 5 74; range 5 6;
median 5 74; Q1 5 72,
Q2 5 74, Q3 5 74.5;
IQR 5 2.5
Florida State: mean 5 71;
modes 5 69, 71, and 74;
range 5 6; median 5 71;
Q1 5 69, Q2 5 71,
Q3 5 73.5; IQR 5 4.5
3. 47
Prentice Hall Algebra 2 • Solve It/Lesson Quiz on Transparencies
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