BUAL 2600 Homework Questions || ANSWERED WITH
ABSOLUTE ACCURACY.
In a statistics class, the following 10 scores were randomly selected: 74, 73, 77, 77, 71, 68, 65,
77, 67, 66.What is the mode? (practice using Excel with commands given in class) correct
answers 77.0
If a population distribution is skewed to the right, then, given a random sample from that
population, one would expect that the ________. correct answers median would be less than the
mean
A graphical portrayal of a quantitative data set that divides the data into classes and gives the
frequency of each class is a(n) ________. correct answers histogram
In a statistics class, 10 scores were randomly selected with the following results (mean = 71.5):
74, 73, 77, 77, 71, 68, 65, 77, 67, 66.What is the range? correct answers 12.00
(77-65=12)
A histogram that has a longer tail extending toward smaller values is ________. correct answers
skewed to the left
Which of the following is influenced the least by the occurrence of extreme values in a sample?
correct answers median
If the mean, median, and mode for a given population are all equal and the relative frequency
curve has matching tails to the right and left, then we would describe the shape of the distribution
of the population as ________. correct answers symmetrical
With this dataset what is the N, mean, median, and mode?
8, 8, 14, 11, 7, 12, 13, 8, 7, 5 correct answers N: 10
mean: 9.3
median: 8.0
mode: 8
With this dataset what is the N, mean, median, and mode?
71, 64, 113, 73, 62, 118, 117, 64, 77 correct answers N: 9
mean: 84.3
median: 73.0
mode: 64
What does an analytic dashboard present? correct answers both current and historical trends of
business's key performance indicators
A(n) ________ is a graphical presentation of the current status and historical trends of a
business's key performance indicators. correct answers dashboard
, What is the median? correct answers the value below which and above which approximately 50
percent of the measurements lie
Compute the population variance of these data: 16,18,23,21,17,16,24,23,9,17,11,16,22,10,15,14.
correct answers 20.5
What is the standard deviation? correct answers a better measure of variability than range
The ________ is the positive square root of the sample variance. correct answers sample
standard deviation
In a hearing test, randomly selected subjects estimate the loudness (in decibels) of a sound, and
the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68.What is the range? correct
answers 18
(80-62=18)
If the mean is greater than the median, then the relative frequency curve is most likely to be
________. correct answers skewed right
In a hearing test, randomly selected subjects estimate the loudness (in decibels) of a sound, and
the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68.What is the standard
deviation? correct answers 4.73
(square root of 22.40 = 4.73)
What is the population mean? correct answers the average of the population measurements
How do you calculate the range? correct answers the largest minus the smallest measurement
In a statistics class, the following 10 scores were randomly selected: 74, 73, 77, 77, 71, 68, 65,
77, 67, 66.What is the median? correct answers 72.0
All of the following are measures of central tendency except the ________. correct answers
range
Lauren is taking courses in accounting, economics, management information systems, public
speaking, and statistics. The sizes of these classes are, respectively, 365, 35, 25, 45, and 30.
Find the mean and the median of the class sizes.
What is a better measure of Lauren's "typical class size"—the mean or the median? correct
answers mean: 100
median: 35
median is a better measurement. because there is only one very high outlier
What does the median divide? correct answers a population into two equal parts
ABSOLUTE ACCURACY.
In a statistics class, the following 10 scores were randomly selected: 74, 73, 77, 77, 71, 68, 65,
77, 67, 66.What is the mode? (practice using Excel with commands given in class) correct
answers 77.0
If a population distribution is skewed to the right, then, given a random sample from that
population, one would expect that the ________. correct answers median would be less than the
mean
A graphical portrayal of a quantitative data set that divides the data into classes and gives the
frequency of each class is a(n) ________. correct answers histogram
In a statistics class, 10 scores were randomly selected with the following results (mean = 71.5):
74, 73, 77, 77, 71, 68, 65, 77, 67, 66.What is the range? correct answers 12.00
(77-65=12)
A histogram that has a longer tail extending toward smaller values is ________. correct answers
skewed to the left
Which of the following is influenced the least by the occurrence of extreme values in a sample?
correct answers median
If the mean, median, and mode for a given population are all equal and the relative frequency
curve has matching tails to the right and left, then we would describe the shape of the distribution
of the population as ________. correct answers symmetrical
With this dataset what is the N, mean, median, and mode?
8, 8, 14, 11, 7, 12, 13, 8, 7, 5 correct answers N: 10
mean: 9.3
median: 8.0
mode: 8
With this dataset what is the N, mean, median, and mode?
71, 64, 113, 73, 62, 118, 117, 64, 77 correct answers N: 9
mean: 84.3
median: 73.0
mode: 64
What does an analytic dashboard present? correct answers both current and historical trends of
business's key performance indicators
A(n) ________ is a graphical presentation of the current status and historical trends of a
business's key performance indicators. correct answers dashboard
, What is the median? correct answers the value below which and above which approximately 50
percent of the measurements lie
Compute the population variance of these data: 16,18,23,21,17,16,24,23,9,17,11,16,22,10,15,14.
correct answers 20.5
What is the standard deviation? correct answers a better measure of variability than range
The ________ is the positive square root of the sample variance. correct answers sample
standard deviation
In a hearing test, randomly selected subjects estimate the loudness (in decibels) of a sound, and
the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68.What is the range? correct
answers 18
(80-62=18)
If the mean is greater than the median, then the relative frequency curve is most likely to be
________. correct answers skewed right
In a hearing test, randomly selected subjects estimate the loudness (in decibels) of a sound, and
the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68.What is the standard
deviation? correct answers 4.73
(square root of 22.40 = 4.73)
What is the population mean? correct answers the average of the population measurements
How do you calculate the range? correct answers the largest minus the smallest measurement
In a statistics class, the following 10 scores were randomly selected: 74, 73, 77, 77, 71, 68, 65,
77, 67, 66.What is the median? correct answers 72.0
All of the following are measures of central tendency except the ________. correct answers
range
Lauren is taking courses in accounting, economics, management information systems, public
speaking, and statistics. The sizes of these classes are, respectively, 365, 35, 25, 45, and 30.
Find the mean and the median of the class sizes.
What is a better measure of Lauren's "typical class size"—the mean or the median? correct
answers mean: 100
median: 35
median is a better measurement. because there is only one very high outlier
What does the median divide? correct answers a population into two equal parts
