Online Access Free DEA-7TT2 Practice Test

When would you prefer a Naive Bayes model to a logistic regression model for classification?
Response:

• A.When some of the input variables might be correlated.
• B.When you need to estimate the probability of an outcome, not just which class it is in.
• C.When all the input variables are numerical.
• D.When you are using several categorical input variables with over 1000 possible values each.

A fair six-sided die is rolled. Let A denote the event that an odd number is rolled. Let C denote the event that a 1, 2, or 3 is rolled. What is the value of the conditional probability, P(C|A)?
Response:

• A.1/3
• B.1/4
• C.1/2
• D.2/3

Refer to the exhibit.

You have plotted the distribution of savings account sizes for your bank. How would you proceed, based on this distribution?
Response:

• A.The accounts of size greater than 2500 are rare, and probably outliers. Eliminate them from your future analysis.
• B.The data is extremely skewed, but looks bimodal; replot the data in the range 2, 500-10, 000 to be sure.
• C.The data is extremely skewed. Replot the data on a logarithmic scale to get a better sense of it.
• D.The data is extremely skewed. Split your analysis into two cohorts: accounts less than 2500, and accounts greater than 2500

Based on the graphic, what should be done to begin addressing chart junk?
Response:

• A.Remove the legend
• B.Reduce the font size in the axis
• C.Remove the vertical gridlines

In the Map Reduce framework, what is the purpose of the Map Function?
Response:

• A.It breaks the input into smaller components and distributes to other nodes in the cluster
• B.It processes the input and generates key-value pairs
• C.It collects the output of the Reduce function
• D.It sorts the results of the Reduce function