EXST 2201 EXAM 1 2024/2025 QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS GRADED A++
Statistics is the science of decision making using random selection of choices.
True or False
False
A shoe store wants to know how much money, on average, their customers
spend each visit to the store. Using their store records, they draw a sample of
4,500 customer visits and record the amount spent at each customer visit. The
average of this data is calculated to answer the shoe store's question.
What is the population in this example?
All shoe store customer visits.
The 4,500 customer visits recorded.
The amount spent in the store at each customer visit.
All shoe store customer visits.
A shoe store wants to know how much money, on average, their customers
spend each visit to the store. Using their store records, they draw a sample of
4,500 customer visits and record the amount spent at each customer visit. The
average of this data is calculated to answer the shoe store's question.
What is the sample in this example?
The amount spent in the store at each customer visit.
,All shoe store customer visits.
The 4,500 customer visits recorded
The 4,500 customer visits recorded.
A shoe store wants to know how much money, on average, their customers
spend each visit to the store. Using their store records, they draw a sample of
4,500 customer visits and record the amount spent at each customer visit. The
average of this data is calculated to answer the shoe store's question.
What is the variable in this example?
All shoe store customer visits.
The 4,500 customer visits recorded.
The amount spent in the store at each customer visit.
The amount spent in the store at each customer visit.
At a birthday party, teams are chosen by putting everyone's name in a hat. Then
names are drawn to make up each team.
Is this sampling with replacement?
True or False
False
At a local seminar, every attendee's name was put into a jar to win a small gift.
Names were selected at random, then returned to the jar. This allowed the
possibility of an attendee winning more than one gift.
,Is this sampling with replacement?
True or False
True
Use the table below about automobiles to classify these columns of data.
Which column contains continuous data? Which column contains discrete data?
Which column contains qualitative data?
A. Number of seats
B. Body style
C. Weight
Continuous data
Discrete data
Qualitative data
Continuous Data: Weight
Discrete Data: Number of Seats
Qualitative Data: Body Style
LSU wants to conduct a survey of high school seniors in Louisiana concerning
their plans for future education. The survey asks three questions:
Gender- What is the senior's gender?
GPA - What is the senior's current GPA to two decimal places?
Years - How many years it will take the senior to complete high school? Which
variable contains continuous data? Which variable contains discrete data? Which
variable contains qualitative data?
, Continuous Data: GPA
Discrete Data: Years
Qualitative Data: Gender
In a data set used in statistics (imagine a MS Excel spreadsheet), information for
the variables are contained in the columns.
True or False
True
In a data set used in statistics (imagine a MS Excel spreadsheet), information
about the variables are contained in the columns.
True or False
True
In a data set used in statistics (imagine a MS Excel spreadsheet), information
about the individuals are contained in the columns.
True or False
False
Randomly choosing several friends to go with you on an automobile trip would
be what type of sampling situation?
Random sampling of your friends with bias.
Random sampling of your friends without replacement.
Random sampling of your friends with replacement.
Random sampling of your friends with a guarantee of a representative sample.
Random sampling of your friends without replacement.
WITH COMPLETE SOLUTIONS GRADED A++
Statistics is the science of decision making using random selection of choices.
True or False
False
A shoe store wants to know how much money, on average, their customers
spend each visit to the store. Using their store records, they draw a sample of
4,500 customer visits and record the amount spent at each customer visit. The
average of this data is calculated to answer the shoe store's question.
What is the population in this example?
All shoe store customer visits.
The 4,500 customer visits recorded.
The amount spent in the store at each customer visit.
All shoe store customer visits.
A shoe store wants to know how much money, on average, their customers
spend each visit to the store. Using their store records, they draw a sample of
4,500 customer visits and record the amount spent at each customer visit. The
average of this data is calculated to answer the shoe store's question.
What is the sample in this example?
The amount spent in the store at each customer visit.
,All shoe store customer visits.
The 4,500 customer visits recorded
The 4,500 customer visits recorded.
A shoe store wants to know how much money, on average, their customers
spend each visit to the store. Using their store records, they draw a sample of
4,500 customer visits and record the amount spent at each customer visit. The
average of this data is calculated to answer the shoe store's question.
What is the variable in this example?
All shoe store customer visits.
The 4,500 customer visits recorded.
The amount spent in the store at each customer visit.
The amount spent in the store at each customer visit.
At a birthday party, teams are chosen by putting everyone's name in a hat. Then
names are drawn to make up each team.
Is this sampling with replacement?
True or False
False
At a local seminar, every attendee's name was put into a jar to win a small gift.
Names were selected at random, then returned to the jar. This allowed the
possibility of an attendee winning more than one gift.
,Is this sampling with replacement?
True or False
True
Use the table below about automobiles to classify these columns of data.
Which column contains continuous data? Which column contains discrete data?
Which column contains qualitative data?
A. Number of seats
B. Body style
C. Weight
Continuous data
Discrete data
Qualitative data
Continuous Data: Weight
Discrete Data: Number of Seats
Qualitative Data: Body Style
LSU wants to conduct a survey of high school seniors in Louisiana concerning
their plans for future education. The survey asks three questions:
Gender- What is the senior's gender?
GPA - What is the senior's current GPA to two decimal places?
Years - How many years it will take the senior to complete high school? Which
variable contains continuous data? Which variable contains discrete data? Which
variable contains qualitative data?
, Continuous Data: GPA
Discrete Data: Years
Qualitative Data: Gender
In a data set used in statistics (imagine a MS Excel spreadsheet), information for
the variables are contained in the columns.
True or False
True
In a data set used in statistics (imagine a MS Excel spreadsheet), information
about the variables are contained in the columns.
True or False
True
In a data set used in statistics (imagine a MS Excel spreadsheet), information
about the individuals are contained in the columns.
True or False
False
Randomly choosing several friends to go with you on an automobile trip would
be what type of sampling situation?
Random sampling of your friends with bias.
Random sampling of your friends without replacement.
Random sampling of your friends with replacement.
Random sampling of your friends with a guarantee of a representative sample.
Random sampling of your friends without replacement.
