C207 Data Driven Decision Making
Quiz Questions (Test Study Questions)
A Boston Hallmark shop is getting ready a finances for the following yr and wishes to forecast
sales. The store notices variant in income around vacations. What sample describes the facts to
be forecasted? - ANS-seasonality
A enterprise entrepreneur desires to predict yearly sales for potential Sub Restaurant web sites.
He plays a regression evaluation based totally upon the place's population and business rating.
What statistic indicates the power of the relationship of populace and rating to sales? - ANS-r
square
A cable company offers its customers each cable tv and net. What statistical rule should be
used to decide the probability that customers may have each cable television and net? -
ANS-multiplication
A vehicle dealership wishes to forecast car income based upon charge discounts and television
commercials. What forecasting approach must the dealership use? - ANS-multiple regression
analysis
A Charity is comparing the effectiveness of its annual walk promotional marketing campaign, in
increasing stroll individuals and donations.What is the appropriate tool for comparing overall
performance? - ANS-consequences based control
A metropolis authorities is trying to decide the countrywide origins of its recent immigrant
populace. If a survey of the immigrant population is conducted in English what form of mistakes
is probably gift inside the facts? - ANS-omission
A metropolis sanatorium needs to assess the hard work hours it wishes primarily based upon
monthly occupied mattress days and common length of patients' stay. The anticipated
regression is: y = 2000 + 75X1 + 65X2 What state of affairs would be expected if X1 = 500 and
X2 = 1000? - ANS-104,500
A organization makes use of time series evaluation to expand its product forecast. The
forecaster uses simple linear regression but notices that the past information fashion is aligned
with advertising prices. What trouble may exist with this regression evaluation? -
ANS-autocorrelation
, A Company's product improvement team check three new car waxes via waxing 5 cars with
every wax after which running them through a vehicle wash. They then record number of
washes it takes before the wax starts to deteriorate. What is the term for the 5 automobiles? -
ANS-experimental unit
A contrast between the effectiveness of on-line vs. Newspaper coupons was carried out over a
three month length to see which technique delivered in extra average sales according to
patron.Which statistic should the pizza manager advise use to decide promotional method to
use? - ANS-t test
A craftsman builds two sorts of birdhouses. One for bluebirds and one for cardinals. He knows
the quantity of exertions and the devices of lumber that are wished for every birdhouse. The
craftsman has available 60 hours of labor and a hundred and twenty devices of lumber. Which
technique ought to the craftsman use to limit fee? - ANS-linear programming
A department store is considering a brand new credit score policy to reduce defaults on bills. Its
facts show that 95% of defaults have at the least 2 overdue bills. Also, 3% of all customers
default and 30% of these clients who have now not defaulted have a least 2 overdue bills. What
statistical rule should be used to discover the chance that a client will default given that as a
minimum 2 payments were past due? - ANS-bayes theorem
A descriptive graph depicting whether or not there may be a correlation or dating among
variables, which include vehicle mileage and resale fee might be: - ANS-scatter plot
A meals chain reveals that there's a strong superb correlation between average each day sales
for his or her pizza shop and the quantity of each day visits to their internet site. What ought to
be considered earlier than the pizza chain can finish that the daily sales are using the wide
variety of visits to their website (or vice versa)? - ANS-is there a casual courting between sales
and site visits?
A healthcare provider is researching blood glucose degrees earlier than and after workout. What
elements ought to be a part of any experimental have a look at including this? - ANS-remedy
techniques, experimental reaction
A High School important wishes to take a look at the maths and science performance of
individual 12th grade students through comparing their rankings across more than one
publications. Which analysis approach should the important use: - ANS-z rating
A big producer desires to forecast call for for a piece of pollution-manipulate device. A evaluate
of the past 12 months of income shows that income are growing. What time collection pattern
does the sales probably show off? - ANS-fashion
A mortgage officer compares the hobby quotes for forty eight month fixed-price loans and forty
eight month variable-charge auto loans. Two unbiased, random samples of car loans are
Quiz Questions (Test Study Questions)
A Boston Hallmark shop is getting ready a finances for the following yr and wishes to forecast
sales. The store notices variant in income around vacations. What sample describes the facts to
be forecasted? - ANS-seasonality
A enterprise entrepreneur desires to predict yearly sales for potential Sub Restaurant web sites.
He plays a regression evaluation based totally upon the place's population and business rating.
What statistic indicates the power of the relationship of populace and rating to sales? - ANS-r
square
A cable company offers its customers each cable tv and net. What statistical rule should be
used to decide the probability that customers may have each cable television and net? -
ANS-multiplication
A vehicle dealership wishes to forecast car income based upon charge discounts and television
commercials. What forecasting approach must the dealership use? - ANS-multiple regression
analysis
A Charity is comparing the effectiveness of its annual walk promotional marketing campaign, in
increasing stroll individuals and donations.What is the appropriate tool for comparing overall
performance? - ANS-consequences based control
A metropolis authorities is trying to decide the countrywide origins of its recent immigrant
populace. If a survey of the immigrant population is conducted in English what form of mistakes
is probably gift inside the facts? - ANS-omission
A metropolis sanatorium needs to assess the hard work hours it wishes primarily based upon
monthly occupied mattress days and common length of patients' stay. The anticipated
regression is: y = 2000 + 75X1 + 65X2 What state of affairs would be expected if X1 = 500 and
X2 = 1000? - ANS-104,500
A organization makes use of time series evaluation to expand its product forecast. The
forecaster uses simple linear regression but notices that the past information fashion is aligned
with advertising prices. What trouble may exist with this regression evaluation? -
ANS-autocorrelation
, A Company's product improvement team check three new car waxes via waxing 5 cars with
every wax after which running them through a vehicle wash. They then record number of
washes it takes before the wax starts to deteriorate. What is the term for the 5 automobiles? -
ANS-experimental unit
A contrast between the effectiveness of on-line vs. Newspaper coupons was carried out over a
three month length to see which technique delivered in extra average sales according to
patron.Which statistic should the pizza manager advise use to decide promotional method to
use? - ANS-t test
A craftsman builds two sorts of birdhouses. One for bluebirds and one for cardinals. He knows
the quantity of exertions and the devices of lumber that are wished for every birdhouse. The
craftsman has available 60 hours of labor and a hundred and twenty devices of lumber. Which
technique ought to the craftsman use to limit fee? - ANS-linear programming
A department store is considering a brand new credit score policy to reduce defaults on bills. Its
facts show that 95% of defaults have at the least 2 overdue bills. Also, 3% of all customers
default and 30% of these clients who have now not defaulted have a least 2 overdue bills. What
statistical rule should be used to discover the chance that a client will default given that as a
minimum 2 payments were past due? - ANS-bayes theorem
A descriptive graph depicting whether or not there may be a correlation or dating among
variables, which include vehicle mileage and resale fee might be: - ANS-scatter plot
A meals chain reveals that there's a strong superb correlation between average each day sales
for his or her pizza shop and the quantity of each day visits to their internet site. What ought to
be considered earlier than the pizza chain can finish that the daily sales are using the wide
variety of visits to their website (or vice versa)? - ANS-is there a casual courting between sales
and site visits?
A healthcare provider is researching blood glucose degrees earlier than and after workout. What
elements ought to be a part of any experimental have a look at including this? - ANS-remedy
techniques, experimental reaction
A High School important wishes to take a look at the maths and science performance of
individual 12th grade students through comparing their rankings across more than one
publications. Which analysis approach should the important use: - ANS-z rating
A big producer desires to forecast call for for a piece of pollution-manipulate device. A evaluate
of the past 12 months of income shows that income are growing. What time collection pattern
does the sales probably show off? - ANS-fashion
A mortgage officer compares the hobby quotes for forty eight month fixed-price loans and forty
eight month variable-charge auto loans. Two unbiased, random samples of car loans are
