ISYE 6501 - Midterm 2 Comprehensive
Questions And derived Answers
, Time from when a generator is turned on until it fails (binomial, exponential, geometric, Poisson,
Weibull). - CORRECT ANS:Weibull
Number of days in a year where the temperature is more than 3 degrees higher than forecast (binomial,
exponential, geometric, Poisson, Weibull). - CORRECT ANS:Binomial
Time from when a house is put on the market until the first offer is received (binomial, exponential,
geometric, Poisson, Weibull). - CORRECT ANS:Weibull
Time from the start of a World Cup soccer match until a goal is scored (binomial, exponential, geometric,
Poisson, Weibull). - CORRECT ANS:Weibull
Time between people entering a grocery store (binomial, exponential, geometric, Poisson, Weibull). -
CORRECT ANS:Exponential
If school ratings can be reasonably well-predicted from the other factors, and new schools built due to
recent population growth can be reasonably well-classified using the other factors, which model would
you recommend? - CORRECT ANS:Model 3 - used imputation, first building a classification model to
estimate (based on other variables) whether a new school is likely to have been built as a result of
recent population growth (or whether it has been built for another purpose, e.g. to replace a very old
school), and then using that classification to select one of two regression models to fill in an estimate of
the school rating; there are two different regression models (based on other variables), one for
neighborhoods with new schools built due to population growth, and one for neighborhoods with new
schools built for other reasons.
In which of the following situations would you recommend using Model 5? Model 5 uses a categorical
variable: first, a classification model was used to estimate whether a new school is likely to have been
built as a result of recent population growth; and then each neighborhood was categorized as "data
available", "missing, population growth", or "missing, other reason". - CORRECT ANS:Ratings cannot be
well-predicted, and reasons for building schools can be well-classified.
Select the mathematical constraint that corresponds to the following: "Unless peanut butter is eaten, no
amount of broccoli can be eaten."
Questions And derived Answers
, Time from when a generator is turned on until it fails (binomial, exponential, geometric, Poisson,
Weibull). - CORRECT ANS:Weibull
Number of days in a year where the temperature is more than 3 degrees higher than forecast (binomial,
exponential, geometric, Poisson, Weibull). - CORRECT ANS:Binomial
Time from when a house is put on the market until the first offer is received (binomial, exponential,
geometric, Poisson, Weibull). - CORRECT ANS:Weibull
Time from the start of a World Cup soccer match until a goal is scored (binomial, exponential, geometric,
Poisson, Weibull). - CORRECT ANS:Weibull
Time between people entering a grocery store (binomial, exponential, geometric, Poisson, Weibull). -
CORRECT ANS:Exponential
If school ratings can be reasonably well-predicted from the other factors, and new schools built due to
recent population growth can be reasonably well-classified using the other factors, which model would
you recommend? - CORRECT ANS:Model 3 - used imputation, first building a classification model to
estimate (based on other variables) whether a new school is likely to have been built as a result of
recent population growth (or whether it has been built for another purpose, e.g. to replace a very old
school), and then using that classification to select one of two regression models to fill in an estimate of
the school rating; there are two different regression models (based on other variables), one for
neighborhoods with new schools built due to population growth, and one for neighborhoods with new
schools built for other reasons.
In which of the following situations would you recommend using Model 5? Model 5 uses a categorical
variable: first, a classification model was used to estimate whether a new school is likely to have been
built as a result of recent population growth; and then each neighborhood was categorized as "data
available", "missing, population growth", or "missing, other reason". - CORRECT ANS:Ratings cannot be
well-predicted, and reasons for building schools can be well-classified.
Select the mathematical constraint that corresponds to the following: "Unless peanut butter is eaten, no
amount of broccoli can be eaten."
