Statistics Final Exam Questions With Accurate Answers.
A type of variable where arithmetic operations do not make sense are called -
accurate answers-Categorical
When using a pie chart, the sum of all the percentages should be - accurate
answers-100
The histogram on the right shows data from 30 students who were asked
"How much time do you spend on the Internet in minutes". What are some
features about the data? - accurate answers-There is a potential outlier
In a statistics class with 136 students, the professor records how much money
each student has in their possession during the first class of the semester. The
histogram shown below represents the data he collected. What is
approximately the percentage of students with under $10 in their possession?
- accurate answers-44%
A study is being conducted on air quality at a small college in the South. As
part of this study, monitors were posted at every entrance to this college from
6am to 10pm on a randomly chosen day. The monitors recorded the mode of
transportation used by each person as they entered campus. Approximately
what percentage of people entering campus on this particular day arrived by
car? - accurate answers-62%
The Insurance Institute for Highway Safety publishes data on the total
damages suffered by compact automobiles in series of controlled, low-speed
collisions. The cost for a sampal of nine cars, in hundreds of dollars is
provided below. What is the median cost of the total damages suffered for this
sample of cars? - accurate answers-$800
What is the interquartile range of the car data? - accurate answers-$450
In a statistics class with 136 students, the professor records how much money
each student has in their possession during the first class of the semester. The
histogram shown below represents the data he collected. Which of the
following is true? - accurate answers-The mean is larger than the median
, The following boxplot is of the birth weights of 160 infants born in a local
hospital. About 40 of the birth weights were below - accurate answers-102
ounces
This is a standard deviation contest. Which of the following sets of four
numbers has the largest possible standard deviation. - accurate answers-
0,0,10,10
Agricultural fairs often hold competitions for produce grown by local
gardeners. The following data are the weight (in pounds) of tomatoes entered
into an annual fair in Roland, Manitoba, Canada in 2007. (2.48, 1.52, 1.15, 1.13,
1.00, 0.99, 0.96, 0.94, 0.75) Apply the 1.5xIQR rule to the data to check for
outlier values. In this case - accurate answers-The value 2.48 is the only
outlier
The number of facebook friends students at a university have are Normally
distributed with a mean of 1200 and a standard deviation of 200. What
percentage pf students has exactly 1000 facebook friends? - accurate answers-
None of the above
Many residents of the suburban neighborhoods own more than one car but
consider one of their cars to be the main family vehicle. The age of these
family vehicles can be modeled by a Normal distribution with a mean of 2
years and a standard deviation of 6 months. What is the standardized z-value
of a family vehicle that is 3 years and 3 months old. - accurate answers-2.5
Using the standard Normal distribution tables, what is the area under the
standard Normal curve corresponding to Z<1.1? - accurate answers-0.8643
Using the standard Normal distribution tables, what is the area under the
standard Normal curve corresponding to -0.5<Z<1.2? - accurate answers-
0.5764
Chocolate bars produced by a certain machine are labeled with 8.0 ounces.
The distribution of the actual weights of these chocolate bars is Normal with a
mean of 8.1 ounces and a standard deviation of 0.1 ounces. A chocolate bar is
considered underweight if it weighs less than 8.0 ounces. What portion of
chocolate bars weighs less than 8.0 ounces? - accurate answers-0.159
A type of variable where arithmetic operations do not make sense are called -
accurate answers-Categorical
When using a pie chart, the sum of all the percentages should be - accurate
answers-100
The histogram on the right shows data from 30 students who were asked
"How much time do you spend on the Internet in minutes". What are some
features about the data? - accurate answers-There is a potential outlier
In a statistics class with 136 students, the professor records how much money
each student has in their possession during the first class of the semester. The
histogram shown below represents the data he collected. What is
approximately the percentage of students with under $10 in their possession?
- accurate answers-44%
A study is being conducted on air quality at a small college in the South. As
part of this study, monitors were posted at every entrance to this college from
6am to 10pm on a randomly chosen day. The monitors recorded the mode of
transportation used by each person as they entered campus. Approximately
what percentage of people entering campus on this particular day arrived by
car? - accurate answers-62%
The Insurance Institute for Highway Safety publishes data on the total
damages suffered by compact automobiles in series of controlled, low-speed
collisions. The cost for a sampal of nine cars, in hundreds of dollars is
provided below. What is the median cost of the total damages suffered for this
sample of cars? - accurate answers-$800
What is the interquartile range of the car data? - accurate answers-$450
In a statistics class with 136 students, the professor records how much money
each student has in their possession during the first class of the semester. The
histogram shown below represents the data he collected. Which of the
following is true? - accurate answers-The mean is larger than the median
, The following boxplot is of the birth weights of 160 infants born in a local
hospital. About 40 of the birth weights were below - accurate answers-102
ounces
This is a standard deviation contest. Which of the following sets of four
numbers has the largest possible standard deviation. - accurate answers-
0,0,10,10
Agricultural fairs often hold competitions for produce grown by local
gardeners. The following data are the weight (in pounds) of tomatoes entered
into an annual fair in Roland, Manitoba, Canada in 2007. (2.48, 1.52, 1.15, 1.13,
1.00, 0.99, 0.96, 0.94, 0.75) Apply the 1.5xIQR rule to the data to check for
outlier values. In this case - accurate answers-The value 2.48 is the only
outlier
The number of facebook friends students at a university have are Normally
distributed with a mean of 1200 and a standard deviation of 200. What
percentage pf students has exactly 1000 facebook friends? - accurate answers-
None of the above
Many residents of the suburban neighborhoods own more than one car but
consider one of their cars to be the main family vehicle. The age of these
family vehicles can be modeled by a Normal distribution with a mean of 2
years and a standard deviation of 6 months. What is the standardized z-value
of a family vehicle that is 3 years and 3 months old. - accurate answers-2.5
Using the standard Normal distribution tables, what is the area under the
standard Normal curve corresponding to Z<1.1? - accurate answers-0.8643
Using the standard Normal distribution tables, what is the area under the
standard Normal curve corresponding to -0.5<Z<1.2? - accurate answers-
0.5764
Chocolate bars produced by a certain machine are labeled with 8.0 ounces.
The distribution of the actual weights of these chocolate bars is Normal with a
mean of 8.1 ounces and a standard deviation of 0.1 ounces. A chocolate bar is
considered underweight if it weighs less than 8.0 ounces. What portion of
chocolate bars weighs less than 8.0 ounces? - accurate answers-0.159
