Question 18 Machine Learning Model Uses Existing Data Predict Direction Stock Market Would Q30661242

Question 18

A machine learning model that uses existing data to predict thedirection of the stock market as up or down would be known as:____________.

Select one:

a. Classification

b. Regression

c. Decision Tree

d. Principle Components Analysis

Question 20

A farmer’s yield of corn is expressed as a linear regressionmodel based upon the input variable which is the number of days ofsunlight during the growing season. The model is express as Y = mX+ b where Y is the estimated corn yield in bushels per acre, m =1.43 and b = 50. Assuming that during the growing season it ispredicted that there will be 82 days of sun, what will the cornyield be in bushels per acre?

___________ bushels per acre

Question 21

It is better to have a lot of data and a less sophisticatedalgorithm than to have less data and a more sophisticatedalgorithm.

Select one:

True

False

Question 22

In principle components analysis, values are computed for newvariables that contain as much of the variance as possible in a fewvariables.

Select one:

True

False

Question 23

Logistic regression can be used to classify cases into how manyclasses?

Select one:

a. 2

b. 3

c. 4

d. None

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