Statistics Midterm questions with verified
answers
A ____________ is a characteristic or attribute of a subject that can
assume different values? Ans✓✓✓ variable
A bar chart works best when Ans✓✓✓ You are contrasting distinct
qualitative variables
A census is: Ans✓✓✓ information on everything in a group
A college instructor polled his class on when they wanted to take the
final exam. 51% said Friday, and 45% said Saturday. What is the best
way to graph this data? Ans✓✓✓ a pie chart but adding a third category
of "no response"
A common name for a Normal Distribution is Ans✓✓✓ a bell curve
A cumulative relative percentage is: Ans✓✓✓ running total of the
relative frequencies
A movie rating out of 5 stars is an example of a variable classified as:
Ans✓✓✓ ordinal
A Normal Distribution has the mean, median, and mode all being equal.
This means that it is Ans✓✓✓ Symmetric
,A Normal Distribution with a large standard deviation will be Ans✓✓✓
Shorter and more spread out
A PDF in statistics is Ans✓✓✓ A probability distribution function.
A pie is a good choice to show relative frequencies. Ans✓✓✓ true
A Probability Distribution function allows us to Ans✓✓✓ Predict the
likelihood of an event
A researcher is interested in knowing the average salary of a player on
the Miami Marlins baseball team. The lowest-paid player receives
$550,000 and the highest-paid player receives $20,000,000. What are the
possible values for this variable? Ans✓✓✓ 550,000 to 20,000,000
A researcher is interested in knowing the average salary of a player on
the Miami Marlins baseball team. Wei-Yin Chen makes $20,000,000 as
a player for the Miami Marlins. This is an example of a: Ans✓✓✓
value of a variable
A researcher wants to graph his favorite pet data: dogs 31%, cats 40%,
both cats and dogs 50%. He wants to use a pie chart so he can color code
the percentages by animal. What type of graph should he use that will
not mislead the reader? Ans✓✓✓ bar
, A taxpayer owes $15.87 on his tax return. What is the level of
measurement for the variable "amount owed?" Ans✓✓✓ ratio
A time-series graph shows how the value of a variable changes
____________. Ans✓✓✓ Over Time
A z-score is Ans✓✓✓ the distance of a value from the mean expressed
in standard deviations
All of the following are characteristics of a symmetric distribution
except: Ans✓✓✓ the distribution is left-skewed
All of the following are differences between discrete and continuous
probability distributions except for: Ans✓✓✓ continuous probability
distributions can describe any variable
All of the following are examples of a continuous probability
distribution except: Ans✓✓✓ basketball free throws
All of the following are types of discrete probability distributions
except: Ans✓✓✓ normal
All the following are characteristics of a normal curve except::
Ans✓✓✓ the distribution can be used to find probabilities for a single
value of the variable
answers
A ____________ is a characteristic or attribute of a subject that can
assume different values? Ans✓✓✓ variable
A bar chart works best when Ans✓✓✓ You are contrasting distinct
qualitative variables
A census is: Ans✓✓✓ information on everything in a group
A college instructor polled his class on when they wanted to take the
final exam. 51% said Friday, and 45% said Saturday. What is the best
way to graph this data? Ans✓✓✓ a pie chart but adding a third category
of "no response"
A common name for a Normal Distribution is Ans✓✓✓ a bell curve
A cumulative relative percentage is: Ans✓✓✓ running total of the
relative frequencies
A movie rating out of 5 stars is an example of a variable classified as:
Ans✓✓✓ ordinal
A Normal Distribution has the mean, median, and mode all being equal.
This means that it is Ans✓✓✓ Symmetric
,A Normal Distribution with a large standard deviation will be Ans✓✓✓
Shorter and more spread out
A PDF in statistics is Ans✓✓✓ A probability distribution function.
A pie is a good choice to show relative frequencies. Ans✓✓✓ true
A Probability Distribution function allows us to Ans✓✓✓ Predict the
likelihood of an event
A researcher is interested in knowing the average salary of a player on
the Miami Marlins baseball team. The lowest-paid player receives
$550,000 and the highest-paid player receives $20,000,000. What are the
possible values for this variable? Ans✓✓✓ 550,000 to 20,000,000
A researcher is interested in knowing the average salary of a player on
the Miami Marlins baseball team. Wei-Yin Chen makes $20,000,000 as
a player for the Miami Marlins. This is an example of a: Ans✓✓✓
value of a variable
A researcher wants to graph his favorite pet data: dogs 31%, cats 40%,
both cats and dogs 50%. He wants to use a pie chart so he can color code
the percentages by animal. What type of graph should he use that will
not mislead the reader? Ans✓✓✓ bar
, A taxpayer owes $15.87 on his tax return. What is the level of
measurement for the variable "amount owed?" Ans✓✓✓ ratio
A time-series graph shows how the value of a variable changes
____________. Ans✓✓✓ Over Time
A z-score is Ans✓✓✓ the distance of a value from the mean expressed
in standard deviations
All of the following are characteristics of a symmetric distribution
except: Ans✓✓✓ the distribution is left-skewed
All of the following are differences between discrete and continuous
probability distributions except for: Ans✓✓✓ continuous probability
distributions can describe any variable
All of the following are examples of a continuous probability
distribution except: Ans✓✓✓ basketball free throws
All of the following are types of discrete probability distributions
except: Ans✓✓✓ normal
All the following are characteristics of a normal curve except::
Ans✓✓✓ the distribution can be used to find probabilities for a single
value of the variable
