Two Technicians Are Discussing Tire Treads

question 11

Multiple Choice

Two technicians are discussing tire treads. Technician A says that straight treads are for large vehicles which require traction for starting and stopping the vehicle. Technician B says that all-weather treads provide good traction on dry or wet roads. Who is correct?

• A) A only
• B) B only
• C) Both A and B
• D) Neither A nor B

---

Definitions:

Denominator

The bottom number in a fraction that shows how many equal parts the item or group is divided into.

Categorical Variable

A variable with categorical data.

Dummy Variables

Variables used in regression analysis to represent categorical data by converting it into a series of binary values.

Levels

The different values or categories that a factor can have in an experiment or statistical model.