SCM - FINAL EXAM COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW!!
the number of stocks a person traded over the past four days was recorded as 3,
6, 0, 3. Compute the sample standard deviation for this data set
a) 4.5
b) 6
c) sq root 4.5
d) sq root 6 - d) sq root 6
find the variation of X for the following probability distribution
(its a column)
x column: 5, 10, 15
P(X): .30, .40, .30
a) 7.07
b) 3.87
c) 15.00
d) 50.00 - c) 15.00
if a fast food restaurant decides to try a new menu item in Atlanta, Miami and Los
Angeles, the non-random sampling method used would be
,a) convenience
b) systematic
c) judgement
d) self-selected - c) judgement
skewed right (positive) indicates
a) that there are more values on the right than on the left
b) nothing about the shape of a distribution
c) that a distribution is symmetric
d) that there are more values on the left than the right - d) that there are
more values on the left than the right
if you have a histogram, how many variables do you have
a) 2
b) 1
c) 3
d) 0 - b) 1
the following table is given for the number of homes sold per day by a realtor
(columns)
Number Sold (X): 0, 1, 2
P(X): .4, .4, .2
is a random variable depicted in the above table?
a) No, because X is not a variable AND the probabilities are not equal
,b) Yes, a random variable is depicted in the above table
c) No, because the probabilities are not equal
d) No, because X is not a variable - b) Yes, a random variable is depicted in
the above table
Generally speaking, which of the following values can be found or computed from
a box plot?
a) standard deviation
b) interquartile range, standard deviation, AND mean can be found or computed
from a box plot
c) mean
d) interquartile range - d) interquartile range
In the population of four previous days, the number of daily complaints filed
against a product were 4, 12, 12, 12. The mean absolute deviation of this
population is equal to:
a) sq root 3
b) 4
c) 3
d) 2 - c) 3
Which of the following is/are a measure of variability of a data set?
a) 10th percentile
b) 75th percentile
c) 10th percentile and 75th percentile
d) any percentile is a measure of variability of a data set
, e) range - e) range
when investing in a certain stock, an individual can make a profit of $1000 with a
probability of 0.2, a profit of $500 with a probability of 0.2, and a loss of $100
with a probability of 0.6. Let X be the profit or loss of this investment. The
expected value of X would be equal to:
a) -$60
b) $1400
c) $360
d) $2400
e) $240 - e) $240
a population consists of the numbers 2, 6, 4. The mean and median, respectively,
are:
a) 3, 4
b) 6, 4
c) 4, 6
d) 4, 4
e) 3, 6 - d) 4, 4
Data Analysis
a) is an Excel Add-in
b) appears on the far left of the Excel ribbon
c) allows Excel users to do statistical analysis in Excel
d) allows Excel users to do statistical analysis in Excel and is an Excel Add-In -
d) allows Excel users to do statistical analysis in Excel and is an Excel Add-In
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND
NEW!!
the number of stocks a person traded over the past four days was recorded as 3,
6, 0, 3. Compute the sample standard deviation for this data set
a) 4.5
b) 6
c) sq root 4.5
d) sq root 6 - d) sq root 6
find the variation of X for the following probability distribution
(its a column)
x column: 5, 10, 15
P(X): .30, .40, .30
a) 7.07
b) 3.87
c) 15.00
d) 50.00 - c) 15.00
if a fast food restaurant decides to try a new menu item in Atlanta, Miami and Los
Angeles, the non-random sampling method used would be
,a) convenience
b) systematic
c) judgement
d) self-selected - c) judgement
skewed right (positive) indicates
a) that there are more values on the right than on the left
b) nothing about the shape of a distribution
c) that a distribution is symmetric
d) that there are more values on the left than the right - d) that there are
more values on the left than the right
if you have a histogram, how many variables do you have
a) 2
b) 1
c) 3
d) 0 - b) 1
the following table is given for the number of homes sold per day by a realtor
(columns)
Number Sold (X): 0, 1, 2
P(X): .4, .4, .2
is a random variable depicted in the above table?
a) No, because X is not a variable AND the probabilities are not equal
,b) Yes, a random variable is depicted in the above table
c) No, because the probabilities are not equal
d) No, because X is not a variable - b) Yes, a random variable is depicted in
the above table
Generally speaking, which of the following values can be found or computed from
a box plot?
a) standard deviation
b) interquartile range, standard deviation, AND mean can be found or computed
from a box plot
c) mean
d) interquartile range - d) interquartile range
In the population of four previous days, the number of daily complaints filed
against a product were 4, 12, 12, 12. The mean absolute deviation of this
population is equal to:
a) sq root 3
b) 4
c) 3
d) 2 - c) 3
Which of the following is/are a measure of variability of a data set?
a) 10th percentile
b) 75th percentile
c) 10th percentile and 75th percentile
d) any percentile is a measure of variability of a data set
, e) range - e) range
when investing in a certain stock, an individual can make a profit of $1000 with a
probability of 0.2, a profit of $500 with a probability of 0.2, and a loss of $100
with a probability of 0.6. Let X be the profit or loss of this investment. The
expected value of X would be equal to:
a) -$60
b) $1400
c) $360
d) $2400
e) $240 - e) $240
a population consists of the numbers 2, 6, 4. The mean and median, respectively,
are:
a) 3, 4
b) 6, 4
c) 4, 6
d) 4, 4
e) 3, 6 - d) 4, 4
Data Analysis
a) is an Excel Add-in
b) appears on the far left of the Excel ribbon
c) allows Excel users to do statistical analysis in Excel
d) allows Excel users to do statistical analysis in Excel and is an Excel Add-In -
d) allows Excel users to do statistical analysis in Excel and is an Excel Add-In
