Deck 2: Describing, Exploring, and Comparing Data

Question 1

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Find the sample data value corresponding to P₂₄ .

Answer 1

30

Question 2

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Using five classes, construct a frequency distribution of the students' exercise capacity.

Answer 2

Question 3

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Find the mean, the median, and the mode for the students' exercise capacity.

Answer 3

Question 4

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Find the percentile corresponding to 36 minutes.

Question 5

If a Pie Chart were constructed for the weights of the salmon, what would be the measure of the central angle for the class weighing 200-249 grams?

A) 67.5°
B) 112.5°
C) 45°
D) 135°

Question 6

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Find the standard deviation and the variance for the sample data of the students' exercise capacity.

Question 7

Use the following data for the next questions. The information below was
generated from a registry of the number of patients waiting for a heart transplant
during the last 10 years.

Using the Empirical Rule, what is the approximate percentage of people waiting for a heart between 2505 and 4695 patients?

Question 8

Use the following data for the next questions. The information below was
generated from a registry of the number of patients waiting for a heart transplant
during the last 10 years.

In 2003, the mean number of patients waiting for a heart transplant was 3400. Convert this data to a z-score.

Question 9

The distribution of the histogram for the weights of the juvenile salmon appears:

A) Normal
B) Skewed left
C) Uniform
D) Skewed right

Question 10

If a cumulative frequency distribution were constructed for the weights of the salmon, what would be the cumulative frequency for the class weighing less than 200 grams?

A) 15
B) 25
C) 55
D) 80

Question 11

Use the frequency distribution to answer the next questions. A sample of 80
juvenile salmon is grouped into the resulting frequency distribution based on their
weights.
Construct a corresponding histogram for the weights of the juvenile salmon.

Question 12

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Construct a stem and leaf plot of the students' exercise capacity.

Question 13

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Identify the five number summary for the students' exercise capacity.

Question 14

Use the following data for the next questions. The information below was
generated from a registry of the number of patients waiting for a heart transplant
during the last 10 years.

Use the Range Rule of Thumb to estimate the minimum and maximum "usual" number of patients waiting for a heart.

Question 15

Use the frequency distribution to answer the next questions. A sample of 80
juvenile salmon is grouped into the resulting frequency distribution based on their
weights.
Determine the sample mean of the weights of the juvenile salmon summarized in the frequency distribution.

Question 16

If a relative frequency distribution were constructed for the weights of the salmon, what would be the relative frequency for the class weighing 150-199 grams?

A) 12.5%
B) 31.25%
C) 18.75%
D) 37.5%

Question 17

Use the frequency distribution to answer the next questions. A sample of 80
juvenile salmon is grouped into the resulting frequency distribution based on their
weights.
Identify the class width, the class midpoints, and the class boundaries.

Question 18

Use the frequency distribution to answer the next questions. A sample of 80
juvenile salmon is grouped into the resulting frequency distribution based on their
weights.
Find the sample standard deviation of the weights of the juvenile salmon summarized in the frequency distribution.

Question 19

Use the following data for the next questions. The information below was
generated from a registry of the number of patients waiting for a heart transplant
during the last 10 years.

In 1998, the mean number of patients waiting for a heart transplant was 4000. Convert this data to a z-score.

Question 20

Use the following sample data for the following questions. A study of physical
fitness tests for 12 randomly selected Pre-Medical students measured their exercise
capacity (in minutes). The following data resulted:

Construct a box plot for the students' exercise capacity.

Question 21

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Using four classes, construct a frequency distribution of the beers' percentage of alcohol content.

Question 22

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Find the percentile corresponding to 9% alcohol.

Question 23

If a cumulative frequency distribution were constructed for the width of the channels, what would be the cumulative frequency for the class width less than 10m?

A) 103
B) 234
C) 185
D) 250

Question 24

Use the frequency distribution to answer the next questions. A sample of 272
log jams found in river channels in the Northwest U.S. is grouped into the resulting
frequency distribution based on the width of the channel in which the log jams
were found.
Determine the sample mean of the width of the channels summarized in the frequency distribution.

Question 25

If a relative frequency distribution were constructed for the width of the channels, what would be the relative frequency for the class with a width of 20-24m?

A) 5.9%
B) 18%
C) 2.2%
D) 30.1%

Question 26

Use the frequency distribution to answer the next questions. A sample of 272
log jams found in river channels in the Northwest U.S. is grouped into the resulting
frequency distribution based on the width of the channel in which the log jams
were found.
Construct a corresponding histogram for the width of the channels.

Question 27

The distribution of the histogram for the width of the channels appears:

A) Normal
B) Skewed left
C) Uniform
D) Skewed right

Question 28

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Construct a box plot for the beers' percentage of alcohol content.

Question 29

Use the following data for the next questions. Dental researchers found that a
sample of females scored the following on the Dental Hygiene Fear Survey:

Convert a total fear score of 10 to a z-score.

Question 30

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Find the standard deviation and the variance for the sample data of the beers' percentage of alcohol content.

Question 31

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Construct a stem and leaf plot of the beers' percentage of alcohol content.

Question 32

Use the following data for the next questions. Dental researchers found that a
sample of females scored the following on the Dental Hygiene Fear Survey:

Convert a total fear score of 35 to a z-score.

Question 33

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Find the sample data value corresponding to .

Question 34

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Find the mean, the median, and the mode for the beers' percentage of alcohol content.

Question 35

If a Pie Chart were constructed for the width of the channels, what would be the measure of the central angle for the class width 10-14m?

A) 21.2°
B) 136.3°
C) 108.5°
D) 64.9°

Question 36

Use the following data for the next questions. Dental researchers found that a
sample of females scored the following on the Dental Hygiene Fear Survey:

Using the Empirical Rule, what is the approximate percentage of females with a total fear score between 16.6 and 38.4?

Question 37

Use the following sample data for the next questions. A study of the
percentage of alcohol content of nine randomly selected expensive beers yielded
the following data:
Identify the five number summary for the beers' percentage of alcohol content.

Question 38

Use the frequency distribution to answer the next questions. A sample of 272
log jams found in river channels in the Northwest U.S. is grouped into the resulting
frequency distribution based on the width of the channel in which the log jams
were found.
Find the sample standard deviation of the width of the channels summarized in the frequency distribution.

Question 39

Use the following data for the next questions. Dental researchers found that a
sample of females scored the following on the Dental Hygiene Fear Survey:

Use the Range Rule of Thumb to estimate the minimum and maximum "usual" total fear score for females.

Question 40

Use the frequency distribution to answer the next questions. A sample of 272
log jams found in river channels in the Northwest U.S. is grouped into the resulting
frequency distribution based on the width of the channel in which the log jams
were found.
Identify the class width, the class midpoints, and the class boundaries.