FREE Master of Data Science Machine Learning Questions and Answers

Question 1

Which of the following can be used to a collection of data to produce balanced cross-validation groupings?

Accepted Answer

createFolds

Answer

createSample

Answer

createResample

Answer

None of the above

Question 2

Identify the incorrect statement.

Accepted Answer

Simple random sampling of time series is probably the best way to resample times series data.

Answer

Three parameters are used for time series splitting

Answer

Horizon parameter is the number of consecutive values in test set sample

Answer

All of the above

Question 3

Which of the subsequent functions can be used to maximize the minimal differences?

Accepted Answer

sumDiss

Answer

avgDiss

Answer

minDiss

Answer

All of the above

Question 4

Which of the following functions is capable of producing the indices needed for the time series splitting type?

Accepted Answer

createTimeSlices

Answer

binTimeSlices

Answer

newTimeSlices

Answer

None of the above

Question 5

Which of the aforementioned functions wraps various lattice graphs to display the data?

Accepted Answer

featurePlot

Answer

plotsample

Answer

levelplot

Answer

None of the above

Question 6

Identify the incorrect statement.

Accepted Answer

In every situation, the data generating mechanism can create predictors that only have a single unique value

Answer

Predictors might have only a handful of unique values that occur with very low frequencies

Answer

The function findLinearCombos uses the QR decomposition of a matrix to enumerate sets of linear combinations

Answer

All of the above

Question 7

The evimp function in the ______ package is wrapped in varImp.

Accepted Answer

earth

Answer

plot

Answer

numpy

Answer

None of the above

Question 8

Identify the incorrect statement.

Accepted Answer

An argument, para, is used to pick the model fitting technique

Answer

The trapezoidal rule is used to compute the area under the ROC curve

Answer

For regression, the relationship between each predictor and the outcome is evaluated

Answer

All of the above

Question 9

Identify the incorrect statement.

Accepted Answer

In Sample Error is also called generalization error

Answer

In Sample Error is also called resubstitution error

Answer

Out of Sample Error is the error rate you get on the new dataset

Answer

All of the above

Question 10

Which of the following best describes the proper working order?

Accepted Answer

questions->input data ->algorithms

Answer

evaluation->input data ->algorithms

Answer

questions->evaluation ->algorithms

Answer

All of the above