Question

Each category of a qualitative variable can be converted to a binary variable by assigning the value 1 to indicate the presence or absence of the condition. True or False?

Answer 1

It is true that a qualitative variable can be converted to a binary variable by assigning a 1 or 0 to indicate the presence or absence of a condition.

Step-by-step explanation:

The statement that each category of a qualitative variable can be converted to a binary variable is true. Assigning the value 1 to indicate the presence of a condition and 0 to indicate the absence of that condition is a common practice in statistics and data analysis. This approach is useful, for instance, when inputting categorical data into many statistical models that require numerical input, such as logistic regression.

For example, if we have a qualitative variable representing car ownership (yes or no), we can create a binary variable where "1" represents owning a car (yes) and "0" represents not owning a car (no).