Unit 1-4 Review Calculations ACTUAL UPDATED Questions and CORRECT
Answers
C
Terms in this set (75)
The histogram below displays the distribution of 50 ages Right-skewed with a possible outlier
at death due to trauma (accidents and homicides) that
were observed in a certain hospital during a week. Which
of the following best describes the shape of the
histogram?
A recent survey asks 89 students, How many hours do 4.8
you spend on the computer in a typical day? =SUMPRODUCT(# of students, # of hours)/SUM(# of students)
Of the 89 respondents, 2 said 1 hour, 4 said 2 hours, 14
said 3 hours, 22 said 4 hours, 18 said 5 hours, 15 said 6
hours, 7 said 7 hours, 5 said 8 hours, 2 said 9 hours. What
is the average (mean) number of hours spent on the
computer?
What percentage of students earned a grade of less than 88%
90? less than 90: [80-90) column: 15/17*100
The distribution of the amount of money spent by 374 and 474
students on textbooks in a semester is approximately 424-2(25) and 424+2(25)
normal in shape with a mean of 424 and a standard
deviation of 25.
According to the standard deviation rule, approximately
95% of the students spent between $___ and $ on
textbooks in a semester.
The distribution of IQ (Intelligence Quotient) is 99.7%
approximately normal in shape with a mean of 100 and a 100-61 = 39
standard deviation of 13. 139-100 = 39
According to the standard deviation rule,____ % of people 39/13 = 3 : 3 falls between 99.7%
have an IQ between 61 and 139. Do not round.
The distribution of IQ (Intelligence Quotient) is 2.5%
approximately normal in shape with a mean of 100 and a 140-100 = 40
standard deviation of 20. 40/20 = 2 : 2 falls between 2.5%
According to the standard deviation rule, only ___ % of (1 falls between 16%)
people have an IQ over 140.
, The distribution of the amount of money spent by $433
students on textbooks in a semester is approximately 409+24
normal in shape with a mean of: μ= 409 and a standard
deviation of: σ= 24.
According to the standard deviation rule, almost 16% of
the students spent more than what amount of money on
textbooks in a semester?
Which class has greater variability in students' estimate of Ms. Apple's class
the number of marshmallows?
Which class has a greater percentage of estimates Ms. Banana's class
between 50 and 100 marshmallows?
A student survey was conducted at a major university, Pie chart
and data were collected from a random sample of 750
undergraduate students. One variable that was recorded
for each student was the student's answer to the question
"With whom do you find it easiest to make friends?
Opposite sex/same sex/no difference."
These data would be best displayed using which of the
following?
Which of the following is the best description of the Positive linear relationship with outlier(s)
relationship between X and Y as it appears in the
scatterplot?
A researcher wants to determine if preschool attendance Whether or not a subject graduates high school
is associated with high school graduation for low-income
students. She randomly assigns low-income children to
two groups; one group will attend preschool program,
the second group will not attend preschool. The
researcher plans to follow the children in the study for 20
years and observe whether or not they graduate from
high school.
Which of the following is the response variable in this
study?
Based on the table above, the percentage of Married 34.6%
participants, who were Obese is: =146/422*100
=Married & Obese column/Married total
Calculate the row percentages for participants who were Perc 1 Dating= 24.9% =83/334*100 (total Obese)
Obese . Perc 2 Cohabiting= 30.8% =103/334*100
Perc 3 Married= 44.3% =148/334*100
Total should be 100%
The outlier on the graph is likely due to an error in If the outlier were removed, the correlation coefficient (r) would increase.
recording the data. Which of the following statements is
true?
Answers
C
Terms in this set (75)
The histogram below displays the distribution of 50 ages Right-skewed with a possible outlier
at death due to trauma (accidents and homicides) that
were observed in a certain hospital during a week. Which
of the following best describes the shape of the
histogram?
A recent survey asks 89 students, How many hours do 4.8
you spend on the computer in a typical day? =SUMPRODUCT(# of students, # of hours)/SUM(# of students)
Of the 89 respondents, 2 said 1 hour, 4 said 2 hours, 14
said 3 hours, 22 said 4 hours, 18 said 5 hours, 15 said 6
hours, 7 said 7 hours, 5 said 8 hours, 2 said 9 hours. What
is the average (mean) number of hours spent on the
computer?
What percentage of students earned a grade of less than 88%
90? less than 90: [80-90) column: 15/17*100
The distribution of the amount of money spent by 374 and 474
students on textbooks in a semester is approximately 424-2(25) and 424+2(25)
normal in shape with a mean of 424 and a standard
deviation of 25.
According to the standard deviation rule, approximately
95% of the students spent between $___ and $ on
textbooks in a semester.
The distribution of IQ (Intelligence Quotient) is 99.7%
approximately normal in shape with a mean of 100 and a 100-61 = 39
standard deviation of 13. 139-100 = 39
According to the standard deviation rule,____ % of people 39/13 = 3 : 3 falls between 99.7%
have an IQ between 61 and 139. Do not round.
The distribution of IQ (Intelligence Quotient) is 2.5%
approximately normal in shape with a mean of 100 and a 140-100 = 40
standard deviation of 20. 40/20 = 2 : 2 falls between 2.5%
According to the standard deviation rule, only ___ % of (1 falls between 16%)
people have an IQ over 140.
, The distribution of the amount of money spent by $433
students on textbooks in a semester is approximately 409+24
normal in shape with a mean of: μ= 409 and a standard
deviation of: σ= 24.
According to the standard deviation rule, almost 16% of
the students spent more than what amount of money on
textbooks in a semester?
Which class has greater variability in students' estimate of Ms. Apple's class
the number of marshmallows?
Which class has a greater percentage of estimates Ms. Banana's class
between 50 and 100 marshmallows?
A student survey was conducted at a major university, Pie chart
and data were collected from a random sample of 750
undergraduate students. One variable that was recorded
for each student was the student's answer to the question
"With whom do you find it easiest to make friends?
Opposite sex/same sex/no difference."
These data would be best displayed using which of the
following?
Which of the following is the best description of the Positive linear relationship with outlier(s)
relationship between X and Y as it appears in the
scatterplot?
A researcher wants to determine if preschool attendance Whether or not a subject graduates high school
is associated with high school graduation for low-income
students. She randomly assigns low-income children to
two groups; one group will attend preschool program,
the second group will not attend preschool. The
researcher plans to follow the children in the study for 20
years and observe whether or not they graduate from
high school.
Which of the following is the response variable in this
study?
Based on the table above, the percentage of Married 34.6%
participants, who were Obese is: =146/422*100
=Married & Obese column/Married total
Calculate the row percentages for participants who were Perc 1 Dating= 24.9% =83/334*100 (total Obese)
Obese . Perc 2 Cohabiting= 30.8% =103/334*100
Perc 3 Married= 44.3% =148/334*100
Total should be 100%
The outlier on the graph is likely due to an error in If the outlier were removed, the correlation coefficient (r) would increase.
recording the data. Which of the following statements is
true?
