Question 18

A machine learning model that uses existing data to predict the direction 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 farmers yield of corn is expressed as a linear regression model based upon the input variable which is the number of days of sunlight 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 is predicted that there will be 82 days of sun, what will the corn yield be in bushels per acre?

___________ bushels per acre

Question 21

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

Select one:

True

False

Question 22

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

Select one:

True

False

Question 23

Logistic regression can be used to classify cases into how many classes?

Select one:

a. 2

b. 3

c. 4

d. None