Final Exam MEGA Quiz

 The goal of the decision trees is to decide how to best split the data to ___ entropy and ___ information gain (purity)

Using the table below, select the optimal model for predicting COVID infection (COVID:yes = 100, COVID:no = 350):

____ DM uses algorithms to make predictions, ___ DM uses algorithms to describe naturally occurring patterns

Kappa measure performance above ____, while lift measures performance above ____

The FDA reports a stat sig difference in the life expectancy of cheese and non-cheese eaters, which is 10 days, this...

Use the below confusion matrix, what is the precision of the negative class?

The residuals plot below shows the following assumption violation:

The output of a logistic reg is in ___, which is converted to ___ then ___

Limitations of decision trees include all of the following EXCEPT:

You design a survey that's 100 questions long and find many respondents don't finish. This could potentially lead to...

What information can we conclude using the following equation? Logit(Loan) = 0.45 - 0.9*Accident:Yes

Based on this decision tree, we'd predict someone with < 30 k income, no criminal record and has the req. docs would...

Which of the following is the correct interpretation of R² = 0.82, where Y is minutes listened on Spotify?

The correct interpretation of the slope of X₂ in the below equation is (all IVs are quant) :y=4.5+0.9X_1-0.2X_2

Use the below confusion matrix, what is the recall (+ class)?

Given the following logistic regression equation, what is the value of the intercept? Logit(Kodos) = 0.68 + 0.23*Age

Regression models represent supervised DM techniques used to predict _____, while classifiers are used to predict _____

I hope ppl will highly review my product, so on a survey I ask: "To what degree to you agree you were satisfied?", This

A 10-fold cross-validation creates 10 ________ and then runs the model 10 times, producing 10 accuracies (which we avg).

T/F: Using Training & Test sets as well as Cross-Validation are steps taken to prevent model overfit

In supervised data mining, which term best describes the variable we wish to predict?

The ___ node is the first, most basic decision in the tree, while the ___ nodes are where the prediction is made

In a linear regression equation, what term indicates the avg value of the DV when all independent variables are zero?

Use the summary table (`degree: Education` is the referent) to determine which of the following statements(s) are true

Decision trees work best with data that ARE NOT linearly separable, for example:

Which of the following problems would be suitable for a logistic regression?

My + class is convicted murder (n = 5), my - class is not convicted (n = 155). I should evaluate my model based on...

a confidence inter. is a range of values for __, given x; while a prediction inter. is a range of values for __, given x

T/F: I want to predict purchasing (purchased or not) based on site visits. Linear regression is a good model choice.

Thanks for a great semester and good luck on the final exam!

Supervised DM techniques like linear and logistic regression can be used for which of the following analytic type(s)?

Drawing conclusions on incomplete (missing) data where you have failed/chosen to not report this problem is an issue of: