ISYE 6501 Midterm 2
Due Nov 17 at 2am
Points 100.02
Questions 48
Available Nov 6 at 2am - Nov 17 at 2am
Time Limit 90 Minutes
Instructions
This quiz was locked Nov 17 at 2am.
Attempt History
Attempt Time Score
LATEST Attempt 1 46 minutes 100.02 out of 100.02
Score for this quiz: 100.02 out of 100.02
Submitted Nov 16 at 9:03pm
This attempt took 46 minutes.
90 Minute Time Limit
Instructions
Work alone. Do not collaborate with or copy from anyone else.
You may use any of the following resources:
One sheet (both sides) of handwritten (not photocopied or scanned) notes
If any question seems ambiguous, use the most reasonable interpretation (i.e. don't be like Calvin):
, If you experience any technical issues (i.e. images not loading) you may refresh the page
without interrupting your exam attempt. If the issue persists, then please finish the exam and
let the Instructors know about the issue in a private Piazza post afterwards.
Good Luck!
INSTRUCTIONS FOR QUESTIONS 1-5
For each of the following five questions, select the probability distribution that could best be used to
model the described scenario. Each distribution might be used, zero, one, or more than one time in the
five questions.
These scenarios are meant to be simple and straightforward; if you're an expert in the field the question
asks about, please do not rely on your expertise to fill in all the extra complexity (you'll end up making
the questions below more difficult than I intended).
Correct answer
Question 1
1..4 pts
Time between people entering a grocery store
Exponential
Geometric
Poisson
Weibull
Binomial
Correct answer
Question 2
1..4 pts
Of the first 100 people to view the website of a house for sale, the number who then come tour it
Binomial
Poisson
, Exponential Geometric
Weibull
Correct answer
Question 3
1..4 pts
Time from when a house is put on the market until the first offer is received
Geometric
Binomial
Exponential
Poisson
Weibull
Correct answer
Question 4
1..4 pts
Time from the beginning of Fall until the first snowflake is seen
Binomial
Geometric
Exponential
Weibull
Poisson
Correct answer
Question 5
1..4 pts
Number of eggs inspected until the first cracked one is found
Poisson
Geometric
Weibull
Exponential
Binomial
INFORMATION FOR QUESTIONS 6-7
Five classification models were built for predicting whether a neighborhood will soon see a large rise in
home prices, based on public elementary school ratings and other factors. The training data set was
missing the school rating variable for every new school (3% of the data points).
Because ratings are unavailable for newly-opened schools, it is believed that locations that have recently
experienced high population growth are more likely to have missing school rating data.
Model 1 used imputation, filling in the missing data with the average school rating from the rest of the
data.
Due Nov 17 at 2am
Points 100.02
Questions 48
Available Nov 6 at 2am - Nov 17 at 2am
Time Limit 90 Minutes
Instructions
This quiz was locked Nov 17 at 2am.
Attempt History
Attempt Time Score
LATEST Attempt 1 46 minutes 100.02 out of 100.02
Score for this quiz: 100.02 out of 100.02
Submitted Nov 16 at 9:03pm
This attempt took 46 minutes.
90 Minute Time Limit
Instructions
Work alone. Do not collaborate with or copy from anyone else.
You may use any of the following resources:
One sheet (both sides) of handwritten (not photocopied or scanned) notes
If any question seems ambiguous, use the most reasonable interpretation (i.e. don't be like Calvin):
, If you experience any technical issues (i.e. images not loading) you may refresh the page
without interrupting your exam attempt. If the issue persists, then please finish the exam and
let the Instructors know about the issue in a private Piazza post afterwards.
Good Luck!
INSTRUCTIONS FOR QUESTIONS 1-5
For each of the following five questions, select the probability distribution that could best be used to
model the described scenario. Each distribution might be used, zero, one, or more than one time in the
five questions.
These scenarios are meant to be simple and straightforward; if you're an expert in the field the question
asks about, please do not rely on your expertise to fill in all the extra complexity (you'll end up making
the questions below more difficult than I intended).
Correct answer
Question 1
1..4 pts
Time between people entering a grocery store
Exponential
Geometric
Poisson
Weibull
Binomial
Correct answer
Question 2
1..4 pts
Of the first 100 people to view the website of a house for sale, the number who then come tour it
Binomial
Poisson
, Exponential Geometric
Weibull
Correct answer
Question 3
1..4 pts
Time from when a house is put on the market until the first offer is received
Geometric
Binomial
Exponential
Poisson
Weibull
Correct answer
Question 4
1..4 pts
Time from the beginning of Fall until the first snowflake is seen
Binomial
Geometric
Exponential
Weibull
Poisson
Correct answer
Question 5
1..4 pts
Number of eggs inspected until the first cracked one is found
Poisson
Geometric
Weibull
Exponential
Binomial
INFORMATION FOR QUESTIONS 6-7
Five classification models were built for predicting whether a neighborhood will soon see a large rise in
home prices, based on public elementary school ratings and other factors. The training data set was
missing the school rating variable for every new school (3% of the data points).
Because ratings are unavailable for newly-opened schools, it is believed that locations that have recently
experienced high population growth are more likely to have missing school rating data.
Model 1 used imputation, filling in the missing data with the average school rating from the rest of the
data.
