1.
Which question is a statistical question?
Choose:
 How long is this alligator? How much did this alligator grow this month? What are the lengths of the alligators at the zoo? What is the difference between the length of this alligator and the length of a crocodile?

2.
A class was surveyed to determine the number of hours that were spent preparing for the final examination. The results are shown at the right.
a) How many students were surveyed?
Choose:
 8 9 19 20

b) What is the mean number of hours spent studying in this survey?
Choose:
 4 hours 4.5 hours 4.35 hours 4.45 hours

3.
Description of a mule, named Monty:
• 14.1 hands high
• 800 pounds
• 12 years old
• purchase cost: \$800
• maintenance cost: \$100 a month
How would you classify this data?

Choose:
 quantitative data      (numerical) qualitative data      (categorical)

 4.  The number of snowboarding accidents reported weekly during one winter season at the Fun Mountain Resort: 12, 15, 6, 8, 12, 17, 10, 8, 7, 13, 14, 16, 8, 18, 11
a) Find the mean.
 Choose: 11.7 12 12.7 12.8

b)
Find the median.
 Choose: 11 12 13 14

c)
Find the mode.
 Choose: 8 11 12 no mode

d)
A teenager wants to emphasize the safety of snowboarding. Which measure of central tendency should the teen use?
 Choose: mean median mode

e)
A parent wants to emphasize the dangers of snowboarding. Which measure of central tendency should the parent use?
 Choose: mean median mode

5.
Lamar collects data to determine whether students think boys or girls are smarter. He surveys his all-male basketball team.
How would you describe this data?

Choose:
 unbiased biased

6.  Questions pertain to the histogram shown below.
a) How many students are in the Fencing Club?
 Choose: 17 18 19 20

b) How many students' heights are greater than or equal to 66 inches tall?
 Choose: 5 6 7 11

c) What percentage of the students have a height greater than or equal to 60 inches but less than 66 inches, to the nearest tenth of a percent?
 Choose: 44.4% 55.2% 66.7% 80.0%

d) In which interval, will you find the median student height, h?
Choose:
 60 ≤ h < 62 62 ≤ h < 64 64 ≤ h < 66 66 ≤ h < 68

7.

The following graphs show responses to different surveys.

a) Which of the graphs can be described as being symmetric?
Choose:
 A only C only A and C A, B, C, D

b)
Which of the graphs can be described as being a "bell curve"?

Choose:
 A and C A and B B and D A, B, C, D

c)
Which of the graphs can allow for the value 32 to be a response from the survey?

Choose:
 C only A and C C and D B and D

d)
For graphs A and B, if each dot represents 3 people responding, which statement is true?

Choose:
 The same number of people responded for both survey A and survey B. Three more people responded to survey B, than survey A. Seventeen people responded to survey A. Nine less people responded to survey A, than survey B.

8.
The table displays the frequency of scores on a 10 point quiz. Find the median of the scores.
Choose:
 7 8 8.5 9

9.
 A survey was conducted to determine how people of different ages felt about M&M candies. Participants were asked if M&M candies were their favorite candy. Of the people surveyed, how many people 16 years of age, and older, responded positively?
Choose:
 between 50 and 100 people over 150 people between 130 and 150 people approximately 110 people

10.
A survey was developed to estimate the average number of hours per week that adults spend exercising.  Every third person entering a large fitness complex was surveyed, with a total of 2,500 people being surveyed.  The data showed that the mean number of hours spent exercising was 3.2 hours per week.  Which characteristic of the survey could create a bias in the results?
Choose:
 The size of the sample. The method of analyzing the data. The method of choosing the people who were surveyed. The size of the population.