Which of the Following Can Be Used to Determine Whether

question 10

Multiple Choice

Which of the following can be used to determine whether the accounts.txt file exists?

• A)If IO.Exists.File("accounts.txt") Then
• B)If IO.File.Exists("accounts.txt") Then
• C)If IO.File("accounts.txt") Then
• D)If IO.Exists("accounts.txt") Then

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Definitions:

Dummy Variable

A binary variable used in regression analyses to represent categories of a nominal variable.

Slope Coefficient

In linear regression, it represents the expected change in the dependent variable for a one-unit change in the independent variable.

Dummy Variables

Variables created to represent attributes with two or more distinct categories or levels, used in regression analysis.

Nominal Variable

A type of variable with data that can be categorized but not ranked or ordered numerically.