Question

1. Price versus size.You visit a local Starbucks to buy a Mocha Frappuccino©. The barista explains that this blended coffee beverage comes in three sizes and asks if you want a Tall, a Grande, or a Venti. The prices are $3.50, $4.00, and $4.50, respectively.(a) What are the variables and cases?(b) Which variable is the explanatory variable? Which is the response variable? Explain your answers.(c) The Tall contains 12 ounces ofbeverage, the Grande contains 16 ounces, and the Venti contains 20 ounces. Answer parts (a) and (b) with ounces in place of the names for the sizes.

Answer 1

(a)

The variables are $3.50, $4.00, and $4.50.

Cases are a Tall, a Grande, or a Venti.

(b)

Price is the explanatory variable and Size of the beverage is the response variable.

An explanatory variable is an independent variable and the dependent variable is known as the response variable. Price is the independent variable which affects the value of the response variable i.e. the size of the beverage.

(c)

The variables are 12 ounces, 16 ounces, and 20 ounces.

Cases are a Tall, a Grande, or a Venti.

Weight is the explanatory variable and Size of the beverage is the response variable.

An explanatory variable is an independent variable and the dependent variable is known as the response variable. Weight is the independent variable which affects the value of the response variable i.e. the size of the beverage.