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Answer the
following questions pertaining to
collecting and organizing data.
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1. |
College
students spent the following amounts of money on textbooks
for one semester.
$101, $107, $121, $90, $89, $101, $98, $110, $115, $85,
$95, $109, $109, $110, $109
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a.
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Complete the charts below showing tally, frequency, and cumulative
frequency. |
Answer to part a |
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b.
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Draw the frequency histogram and the cumulative
frequency histogram.
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Answer to part b |
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Cost
Interval |
Tally |
Frequency |
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80-89 |
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90-99 |
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100-109 |
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110-119 |
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120-129 |
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Cost
Interval |
Cumulative
Frequency |
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80-89 |
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90-99 |
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100-109 |
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110-119 |
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120-129 |
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| 2. |
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The monthly
family budget is $1200. According to the circle
graph at the left, how much of the monthly budget, to the
nearest dollar, is spent on pet supplies?
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Choose:
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Explanation
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3. |
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According to the box-and-whisker
plot shown at the left, what are the five statistical
summary values?
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the median?
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the first
quartile?
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the third
quartile?
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the
minimum value?
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the
maximum
value?
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Answer
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| 4. |
The number of iTunes downloaded by 25 students in
one week ranges
from 15 to 55. The box-and-whisker plot below
depicts this data.
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For this data:
a.) What is the minimum number of iTunes
downloaded?
b.) What is the maximum number of iTunes
downloaded?
c.) What is the number of iTunes at the 25th
percentile?
d.) What is the number of iTunes at the 50th
percentile?
e.) What is the number of iTunes at the 75th
percentile? |
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Answer
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5. |
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A police officer was studying traffic patterns in one
part of town. In this study, he recorded the
speeds of 17 cars traveling in a 40 mph zone. Here
are the speeds in miles per hour:
35, 40, 42, 43,
45, 46, 37, 38, 52, 39, 47, 42, 41, 39, 54, 52, 25 |
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For this data:
a.) Construct a histogram using the intervals
21-25, 26-30, 31-35, 36-40, 41-45,
46-50, and 51-55.
b.) Construct a cumulative frequency histogram
using the intervals 21-25, 21-30,
21-35, 21-40, 21-45, 21-50, and 21-55. |
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Answer
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6. |
The data set 5, 6, 7, 8, 9, 9, 9, 10,
12, 14, 17, 17, 18, 19, 19 represents the number of
hours spent on the Internet in a week by students in
a mathematics class.
Which box-and-whisker plot represents this data? |
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Choose: |
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