Question

**A.** Systematic Sample

**B.** Simple Random Sample

**C.** Convenience Sample

**D.** Multi-Stage Sample

**E.** Stratified Sample

**F.** Cluster Sample

1. Among your friends who took the exam, select 4 of them completely at random.

**2.** Obtain an alphabetical list of
all students who took the exam. Starting with the 6th student on
the list, survey every 14th student.

**3.** Randomly choose 4 of the 14
sections, and survey every student from those 4 sections.

**4.** Choose a set of 42 students
completely at random.

**5.** Obtain an alphabetical list of
all students who took the exam. Choose 6 letters at random, and
survey every student whose last name begins with one of the chosen
letters.

Answer #1

1. Among your friends who took the exam, select 4 of them completely at random.

ans-> **C.** Convenience Sample

**2.** Obtain an alphabetical list of all students
who took the exam. Starting with the 6th student on the list,
survey every 14th student.

ans-> **A.** Systematic Sample

**3.** Randomly choose 4 of the 14 sections, and
survey every student from those 4 sections.

ans-> **F.** Cluster Sample

**4.** Choose a set of 42 students completely at
random.

ans-**> B.** Simple Random Sample

**5.** Obtain an alphabetical list of all students
who took the exam. Choose 6 letters at random, and survey every
student whose last name begins with one of the chosen letters.

ans-> **D.** Multi-Stage Sample

Identify the sampling strategy used in each scenario. Select
from simple random, systematic, stratified, cluster, convenience,
or state that this is not a random sampling strategy.
a. Names are written on ping-pong balls, then the balls are
mixed and drawn at random.
b. The population of those on campus are divided into students,
faculty, and staff. A proportional number are then randomly
selected using simple random sampling from each of the three
groups.
c. Individuals are lined up and every...

Identify the type of sampling used: random, systematic,
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To estimate the percentage of defects in a recent manufacturing
batch, a quality control manager at IBM selects every the 12th
computer that comes off the assembly line starting with the until
she obtains a sample of 90 computers

Identify the sampling technique used in the study. Choose either
simple random, clustered, stratified, systematic, or
convenience.
1. A community college student interviews everyone in a
statistics class to determine the percentage of students that own a
car.

____
Simple Random Sample
____
Cluster sample
____
Systematic sample
____
Stratified sample
1.
While this type of sampling is very eacy to carry out, and hence
saves time and money, it can very easily yield samples which are
non-representative of the population, unintentionally. Often, data
comes "in cycles", where the beginning and the end of each cycle is
"atypical". If the "kth" individual is picked at the beginning or
at the end of a cycle more often than a...

Classify each sample as Random, Systematic, Stratified, Cluster
or other?
All fast food workers at a randomly selected fast food
restaurants are selected and asked how many hours per week they
work.
Every 100th hamburger manufactured is checked to
determine its fat content.
Mail carriers of a large city are divided into four groups
according to gender (male or female) and according to whether they
walk or ride on their routes. Then 10 are selected from each group
and interviewed...

Administrators at A&M Texas university were interested in
estimating the percentage of students who are the first in their
family to go to college. For each scenario below, identify the type
of sample used by the university administrators. Possible answers
include simple random sample, systematic sample, stratified sample,
cluster sample, census, voluntary response sample, and convenience
sample. a) using a computer based list of registered students,
select one of the first 25 on the list by random and then contact...

2. For the examples labeled (a)-(c), identify the sampling
strategy (from the list given at the top of the table) that is
being implemented to generate a sample of 240 OSU students for the
situation described in #1 above.
For parts (d) and (e), briefly (but clearly) describe a specific
approach for generating a sample of 240 OSU students that uses each
of the two remaining sampling strategies NOT identified in the
first three examples
Choose from these five (5)...

PART 1:
Sampling
How we select our sample will directly influence the
external validity of the study. If a sample is
representative, then our external validity
is stronger. If a sample is non-representative, then our external
validity is weaker.
QUESTIONS:
1.
You are interested in looking at the relationship between
student-to-teacher ratio and GPA at California 2- and 4-year
colleges. You suspect that average GPA is higher at 2-year colleges
where student-to-teacher ratio is low, relative to 4-year colleges
colleges...

Dr. Granger is hoping to encourage Coker students who are taking
math courses to visit the Center for Quantitative Literacy for math
tutoring. She decides to conduct a study to find out what types of
advertising or incentives might be effective.
a. What is the population for this study?
Select your answer from one of the following options.
a.
All students in MAT 203
b.
A random selection of 100 Coker students
c.
All Coker students who are taking math...

Close Friends: The 2004 General Social Survey (GSS) interviewed
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interviewer asked: “From time to time, most people discuss
important matters with other people. Looking back over the last six
months – who are the people with whom you discussed matters
important to you? Just tell me their first names or initials.” The
interviewer then recorded how many names or initials the respondent
mentioned. Results are tallied in the following table:...

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