Page | 1
EXST 2201 EXAM 1
Questions and Verified
Answers
Question: lesson 1.1
Ans:
Question: True or False: statistics is the science of decision making using random selection
of choices
Ans: False
Question: 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?
Ans: all shoe store customer visits
Question: 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?
Ans: the 4,500 customer visits recorded
Question: 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
, Page | 2
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?
Ans: the amount spent in the store at each customer visit
Question: 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?
Ans: False
Question: 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?
Ans: True
Question: 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?
Ans: continuous data: weight
discrete data: number of seats
qualitative data: body style
Question: 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?
, Page | 3
Ans: continuous data: GPA
discrete data: years
qualitative data: gender
Question: True or False: In a data set used in statistics (imagine a MS Excel spreadsheet),
information for the variables are contained in the columns.
Ans: true
Question: True or False: In a data set used in statistics (imagine a MS Excel spreadsheet),
information about the variables are contained in the columns.
Ans: True
Question: True or False: In a data set used in statistics (imagine a MS Excel spreadsheet),
information about the individuals are contained in the columns.
Ans: False
Question: Randomly choosing several friends to go with you on an automobile trip would
be what type of sampling situation?
Ans: random sampling of your friends without replacement
Question: The Gallup News Service sent out 2,000 questionnaires for survey about climate
change. 1,004 people responded to the survey and the others did not.
What type of statistical study is this survey?
Ans: this is an observational study
Question: lesson 1.2
Ans:
Question: what is the true and final purpose of statistics?
EXST 2201 EXAM 1
Questions and Verified
Answers
Question: lesson 1.1
Ans:
Question: True or False: statistics is the science of decision making using random selection
of choices
Ans: False
Question: 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?
Ans: all shoe store customer visits
Question: 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?
Ans: the 4,500 customer visits recorded
Question: 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
, Page | 2
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?
Ans: the amount spent in the store at each customer visit
Question: 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?
Ans: False
Question: 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?
Ans: True
Question: 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?
Ans: continuous data: weight
discrete data: number of seats
qualitative data: body style
Question: 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?
, Page | 3
Ans: continuous data: GPA
discrete data: years
qualitative data: gender
Question: True or False: In a data set used in statistics (imagine a MS Excel spreadsheet),
information for the variables are contained in the columns.
Ans: true
Question: True or False: In a data set used in statistics (imagine a MS Excel spreadsheet),
information about the variables are contained in the columns.
Ans: True
Question: True or False: In a data set used in statistics (imagine a MS Excel spreadsheet),
information about the individuals are contained in the columns.
Ans: False
Question: Randomly choosing several friends to go with you on an automobile trip would
be what type of sampling situation?
Ans: random sampling of your friends without replacement
Question: The Gallup News Service sent out 2,000 questionnaires for survey about climate
change. 1,004 people responded to the survey and the others did not.
What type of statistical study is this survey?
Ans: this is an observational study
Question: lesson 1.2
Ans:
Question: what is the true and final purpose of statistics?
