Dependent and Independent

Carey and Justin are raising money to purchase books for their school's library. The more money they raise, the more books they will be able to purchase for the library. m = the amount of money Carey and Justin raise b = the number of books Carey and Justin will be able to purchase In this scenario, the number of books is the _________________ variable.

• independent

• dependent

Carey and Justin are raising money to purchase books for the library. The more money they raise, the more books they will be able to purchase for the library.

Which of the variables is dependent?

• amount of money raised

• number of books purchased after raising the money

Identify the independent variable

The number of hamburgers, h, sold and the dollar amount of sales, s taken in

• h

• s

Grace is bringing treats to her Algebra 1 class on her birthday. The number of treats she brings is based on the number of students in her class.

Which of the variables is independent?

• number of students

• number of treats

Sophie is bringing treats to her elementary school class on her birthday. The number of treats she brings in is based on the number of students in her class.

t = the number of treats

s = the number of students

Which of the variables is INDEPENDENT?

• s

• t

A bag contains 2 striped cubes, 3 dotted cubes, 4 white cubes and 3 red cubes. What is the probability of drawing a white cube, not replacing it, and then drawing a dotted cube?

• dependent

• independent

A pocket contains 3 pennies, 2 nickels, 3 quarters and 4 dimes. What is the probability of randomly choosing a quarter two times in a row if the first coin drawn is not replaced?

• dependent

• independent

Clinton has a bag of Skittles™. Inside the bag are 6 red, 4 orange, 7 yellow, 3 purple and 4 green Skittles™. What is the probability of drawing a green Skittle™, replacing it, and then drawing another green Skittle™?

• independent

• dependent

A ​ ​ ​ (a)   variable changes in response to another variable.

• dependent

• independent

What is the dependent variable in the statement? The number of minutes spent talking on the phone, m, and the amount of a cell phone bill, a

• Dependent variable: m

• Dependent variable: a