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Unformatted text preview: Summer 2011 Name (print) S Di u 1c . m s
MGMT 301 On my honor, I have neither given nor received aid on Quiz 1A this assignment: (1 point each) 1. Match the following scenarios with the type of sampling which is being described. A. Census D. Stratiﬁed sampling
B. Simple random sampling (SRS) E. Cluster sampling
C. Systematic sampling F. Convenience sampling 1. D The school principal wants to take a survey of the 1500 students in the school (each assigned a unique number between 1 and 1500). She groups the students by class rank (freshman, ( 31 r cpl
sophomore, junior and senior) and then uses a computer’s random number generator to randomly select 25 students from each class rank. A professor wishes to take a sample of the 124 students in her class. She decided to interview
the ﬁrst 25 students entering her class next Tuesday morning. 1'“ b An airline wishes to survey its customers. The airline takes the list of ﬂights scheduled for
Friday and randomly selects ﬁve ﬂights. Then the airline administers surveys to every passenger on those selected ﬂights. K C “L: “A S In A professor wishes to take a sample from the 1600 students in the biology department. Each
student has an identiﬁcation number. The professor selects an identiﬁcation number at
random from among the ﬁrst 16 identiﬁcation numbers on the list, and then selects every 16th
identiﬁcation number on the list from that point on for the sample. At the end of the semester, a professor collects a course evaluation form from every student in
the class. Ml I want to select a sample of 20 movies from a Blockbuster video store. I started by taking the
alphabetical list of movies and numbering them. Then I had StatCrunch randomly generate
20 numbers between 1 and the highest number on my list and selected the movies which corresponded to those numbers. (3 points) II. Circle all the sampling methods which require you to have a detailed sampling frame: a Census Stratiﬁed sampling .3 Simple random sampling (SRS) E. Cluster sampling
0 Systematic sampling F. Convenience sampling TURN QUIZ OVER FOR REMAINING QUESTIONS (1 point each) III. Match each deﬁnition below with one of the following: A. population B. sampling frame F. a parameter
C. sample G. a statistic
D. sampling unit H. sampling error (variability) A maker of frozen meals claims that the average (mean) caloric content of aﬂ its meals is 800 calories. A
researcher randomly selects 12 meals and ﬁnds that the average (mean) number of calories for these
selected meals is 873. L/ 5 W U
1. 6 The average number of calories for the 12 selected meals is 873. What is 873?
[ PopuJ
2. F The maker claims that the average number of calories for all its meals is 800. What is 800?
3. H The difference between this sample mean and the sample mean obtained from a different
sample of 12 meals.
4. D One frozen meal that has been selected during sampling.
5. A A_ll the frozen meals made by this manufacturer.
6. Q The 12 frozen meals selected.
7. B The m of all frozen meals which are available for being selected for the sample. (1 point each) IV. Which type of bias is being described in the following scenarios? (There may be more
than one type of bias but choose the main one I am describing). A. Selection bias B. Measurement/response bias C. Nonresponse bias
1. C A researcher mails 1000 surveys to a random sample of homeowners and only 124 are
returned. 2. A A researcher has only chosen boys for her sample. What type of bias has occurred? 3. B A researcher obtains opinions about smoking in restaurants by asking the following
question: “Given that it has been proven that second—hand smoke causes lung cancer,
should smoking be allowed in public restaurants?” What type of bias will occur? 4. A researcher collects data on sexually transmitted diseases by using facetoface interviews
with the subjects. Some people may not answer honestly. What type of bias may
occur? Summer 2011 Name (print) 60 l u l; { gm 5 MGMT 301 On my honor, I have neither given nor received aid on
Quiz 1B this assignment: (1 point each) I. Match the following scenarios with the type of sampling which is being described. A. Census D. Simple random sampling (SRS)
B. Systematic sampling E. Stratiﬁed sampling
C. Cluster sampling F. Convenience sampling 1. B A professor wishes to take a sample from the 1600 students in the biology department. Each
student has an identiﬁcation number. The professor selects an identiﬁcation number at
random from among the ﬁrst 16 identiﬁcation numbers on the list, and then selects every 16th
identiﬁcation number on the list from that point on for the sample. 2. A At the end of the semester, a professor collects a course evaluation form from every student in
the class. 3. D I want to select a sample of 20 movies from a Blockbuster video store. I started by taking the
alphabetical list of movies and numbering them. Then I had StatCrunch randomly generate
20 numbers between 1 and the highest number on my list and selected the movies which
corresponded to those numbers. 4. E The school principal wants to take a survey of the 1500 students in the school (each assigned a , unique number between 1 and 1500). She groups the students by class rank (freshman, (S Jrr (xng
sophomore, junior and senior) and then uses a computer’s random number generator to
FWK 5. F A professor wishes to take a sample of the 124 students in her class. She decided to interview
the ﬁrst 25 students entering her class next Tuesday morning. _
[ cmsw
6. C/ An airline wishes to survey its customers. The airline takes the list of ﬂights scheduled for Friday and randomly selects ﬁve ﬂights. Then the airline administers surveys to every
passen er on those selected ﬂi hts. (3 points) 11. Circle all the sampling methods which do n_ot require you to have a detailed sampling frame: A. Census D. Stratiﬁed sampling
B. Simple random sampling (SRS) Cluster sampling
C. Systematic sampling Convenience sampling TURN QUIZ OVER FOR REMAINING QUESTIONS (1 point each) III. Match each deﬁnition below with one of the following: A. a parameter E. sampling error
B. astatistic F. population/process
C. sampling unit G. sample D. sampling frame A maker of frozen meals claims that the average (mean) caloric content of aﬂ its meals is 800 calories. A
researcher randomly selects 12 meals and ﬁnds that the average (mean) number of calories for these
selected meals is 873. 1. One frozen meal that has been selected during sampling.
2. I: A_11 the frozen meals made by this manufacturer.
3. G The 12 frozen meals selected. u
g o.er
4. B The average number of calories for the 12 selected meals is 873. What is 873?
P o P chodn' rm
5. A The maker claims that the average number of calories for all its meals is 800. What is 800?
6. E The difference between this sample mean and the sample mean obtained from a different
sample of 12 meals.
7. D The list of all frozen meals which are available for being selected for the sample. (1 point each) IV. Which type of bias is being described in the following scenarios? (There may be more
than one type of bias but choose the main one I am describing). A. Nonresponse bias B. Measurement/response bias C. Selection bias 1. C, A researcher has only chosen girls for her sample. What type of bias has occurred? 2. B A researcher obtains opinions about smoking in restaurants by asking the following
question: “Given that it has been proven that secondhand smoke causes lung cancer,
should smoking be allowed in public restaurants?” What type of bias will occur? 3. A A researcher mails 1000 surveys to a random sample of homeowners and only 124 are
returned. 4. B A researcher collects data on how happy nursing home patients are. What type of bias may
occur? ...
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