MATH302 Statistics UPDATED ACTUAL Questions and CORRECT Answers
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Course
MATH302 Statistics
Institution
MATH302 Statistics
MATH302 Statistics UPDATED ACTUAL
Questions and CORRECT Answers
What is the sampling method used in the following scenario? A teacher wants to know if her
students are doing homework, so she randomly selects rows two and five and then calls on all
students in row two and all students in row ...
MATH302 Statistics UPDATED ACTUAL
Questions and CORRECT Answers
What is the sampling method used in the following scenario? A teacher wants to know if her
students are doing homework, so she randomly selects rows two and five and then calls on all
students in row two and all students in row five to present the solutions to homework problems
to the class. - CORRECT ANSWER- cluster
The first 50 people who walk into a sporting event are polled on their television preferences.
What type of sampling was used? - CORRECT ANSWER- convenience
A market researcher polled every tenth person who walks into a store. What type of sampling
was used? - CORRECT ANSWER- systematic
What is the sampling method used in the following scenario? The librarian at a public library
wants to determine what proportion of the library users are children. The librarian has a tally
sheet on which she marks whether books are checked out by an adult or a child. She records this
data for every fourth patron who checks out books. - CORRECT ANSWER- systematic
What was the sampling method used in the scenario? A study was done to determine the age, the
number of times per week, and the duration (amount of time) of residents using a local park in
San Antonio, Texas. The first house in the neighborhood around the park was selected randomly,
and then the resident of every eighth house in the neighborhood around the park was
interviewed. - CORRECT ANSWER- systematic
A Lake Tahoe Community College instructor is interested in the mean number of days Lake
Tahoe Community College math students are absent from class during a quarter. X = number of
days a Lake Tahoe Community College math student is absent In this case, X is an example of -
CORRECT ANSWER- a variable
Which of the following correctly describes the relationship between a sample and a population? -
CORRECT ANSWER- a sample is a group of subjects selected from a population to be studied
, A marriage counselor is interested in the proportion of clients she counsels who stay married.
identify the sample - CORRECT ANSWER- a subgroup of clients of this marriage counselor
Crime-related and demographic statistics for 47 US states were collected from government
agencies, including the FBI's Uniform Crime Report. One analysis of this data found a strong
connection between education and crime indicating that higher levels of education in a
community correspond to higher crime rates. Which of the potential problems with samples
discussed below could explain this connection? - CORRECT ANSWER- causality
Crime-related and demographic statistics for 47 US states were collected from government
agencies, including the FBI's Uniform Crime Report. One analysis of this data found a strong
connection between education and crime indicating that higher levels of education in a
community correspond to higher crime rates. Which of the potential problems with samples
discussed below could explain this connection? - CORRECT ANSWER- confounding
round the fraction to four decimal places
845/98 - CORRECT ANSWER- 8.6224
You are collecting the same data and received very different results from your classmates. What
do you do? - CORRECT ANSWER- reevaluate data-taking methods.
When collecting your data, you notice that your results are very different from your classmates.
What should you do? - CORRECT ANSWER- Reevaluate your accuracy
Fifty part-time students were asked how many courses they were taking this term. The
(incomplete) results are shown below
Answer the following two questions:
What percent of students take exactly two courses? Round to a whole number. Do not include
decimals.
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