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1
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A survey completed at a large university asked 2,000 students to estimate the
average number of hours they spend studying each week. Every tenth student entering the library
was surveyed. The data showed that the mean number of hours that students spend studying was
15.7 per week. Which characteristic of the survey could create a bias in the results?
a) | the size of the sample | c) | the method of analyzing the data | b) | the size of the
population | d) | the method of
choosing the students who were surveyed |
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2
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The yearbook staff has designed a survey to learn student opinions on how the
yearbook could be improved for this year. If they want to distribute this survey to 100
students and obtain the most reliable data, they should survey
a) | every third student sent to the office | c) | every third student to enter the
gym for the basketball game | b) | every third student to enter the
library | d) | every third student
arriving at school in the morning |
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3
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Which survey is least likely to contain bias?
a) | surveying a sample of people leaving a movie theater to determine which flavor of ice
cream is the most popular | c) | surveying a sample of people leaving a library to determine the
average number of books a person reads in a year | b) | surveying the members of a football team to
determine the most watched TV sport | d) | surveying a sample of people leaving a gym to determine the average number of hours a
person exercises per week |
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4
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A survey is to be conducted in a small upstate village to determine whether or
not local residents should fund construction of a skateboard park by raising taxes. Which
segment of the population would provide the most unbiased responses?
a) | a club of local skateboard enthusiasts | c) | a group opposed to any increase in
taxes | b) | senior citizens living on fixed incomes | d) | every tenth person 18 years of age or older
walking down Main St. |
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5
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A principal is concerned about the decline in the number of students who
purchase food from the cafeteria. A survey was developed to assist the principal. The
most appropriate method would be for the principal to randomly select 100 students from
a) | the junior class | b) | the student directory | c) | the Algebra
2/Trigonometry classes | d) | the students who are eating during fourth
period lunch in the cafeteria |
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6
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High school officials wanted to assess the need for a new diving board.
They created a survey and distributed it to a large, diverse crowd at the State Swim Meet held at
their school. Which characteristic of the survey is most likely to create a bias?
a) | the number of participants | c) | the way the set of data from the
survey was analyzed | b) | the height of the
participants | d) | the way the
participants were selected to take the survey |
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7
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Which statement(s) about statistical studies is true? I. A survey of all English classes in a high
school would be a good sample to determine the number of hours students throughout the school spend
studying.
II. A survey of all ninth graders in a high school would be a good
sample to determine the number of student parking spaces needed at that high
school.
III. A survey of all students in one lunch period in a high school would be a
good sample to determine the number of hours adults spend on social media websites.
IV. A
survey of all Calculus students in a high school would be a good sample to determine the number of
students throughout the school who don’t like math. a) | I, only | c) | I and III | b) | II, only | d) | III and IV |
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