you need to implement N-fold cross-validation after creating a regression model?
Under which circumstance do you need to implement N-fold cross-validation after creating a regression model?
Which rule has a confidence equal to 50%?
Consider a database with 4 transactions:
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
The minimum support is 25%. Which rule has a confidence equal to 50%?
What can you determine from the lift calculation?
You are using the Apriori algorithm to determine the likelihood that a person who owns a home has a good credit score. You have determined that the confidence for the rules used in the algorithm is > 75%. You calculate lift = 1.011 for the rule, “People with good credit are homeowners”. What can you determine from the lift calculation?
Which rule has a confidence at least 50%?
Consider a database with 4 transactions:
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
You decide to run the association rules algorithm where minimum support is 50%. Which rule has a confidence at least 50%?
Which word or phrase completes the statement? Data-ink ratio is to data visualization as __________ .
Which word or phrase completes the statement? Data-ink ratio is to data visualization as __________ .
In data visualization, what is used to focus the audience on a key part of a chart?
In data visualization, what is used to focus the audience on a key part of a chart?
Which analytical technique would be appropriate in this situation?
Your company has 3 different sales teams. Each team’s sales manager has developed incentive offers to increase the size of each sales transaction. Any sales manager whose incentive program can be shown to increase the size of the average sales transaction will receive a bonus.
Data are available for the number and average sale amount for transactions offering one of the incentives as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a demonstrable increase in the average sale amount. Which analytical technique would be appropriate in this situation?
When creating a presentation for a technical audience, what is the main objective?
When creating a presentation for a technical audience, what is the main objective?
In which lifecycle stage are test and training data sets created?
In which lifecycle stage are test and training data sets created?
What is the most appropriate model to use? Suppose labeled training data is available.
A data scientist plans to classify the sentiment polarity of 10, 000 product reviews collected from the Internet. What is the most appropriate model to use? Suppose labeled training data is available.