Author Question: Estimation methods are also referred to as a. prediction methods. b. clustering methods. c. ... (Read 226 times)

madam-professor · **on:** Jun 24, 2018

Estimation methods are also referred to as
a. prediction methods.
b. clustering methods.
c. association methods.
d. supervised methods.

Question 2

In preparing categorical variables for analysis, it is usually best to
a. convert the categories to numeric representations.
b. convert the categories to binary, dummy variables.
c. combine as many categories as possible.
d. let them remain categorical.

ynlevi · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

a
RATIONALE: Estimation methods are also referred to as regression methods or prediction methods.

Answer to Question 2

b
RATIONALE: Typically, it is best to encode categorical variables with 0-1 dummy variables. Using 0-1 dummy variables to encode categorical variables with many different categories results in a large number of variables. In some cases, the number of categories may be reduced by combining categories.