Finding If Independent or Not Independent

Ellie wants to read a book over spring break. She comes up with a reading plan to make sure she finishes it. The graph shows the relationship between the number of days she spends reading, d, and the total number of pages she has read, p.

• d is independent

  p is dependent

• p is independent

  d is dependent

While driving to a work site, Carter realized he was almost out of gas, so he stopped at a gas station to fill up his truck. The table shows the relationship between the number of gallons of gas he pumps, g,

and the cost of the gas, c.

• g is independent

  c is dependent

• c is independent

  g is dependent

During soccer season, Rylie's team practices for the same number of hours each day. The table shows the relationship between the number of days that Rylie goes to soccer practice, d, and the total number of hours that she practices, h.

• d is independent

  h is dependent

• h is independent

  d is dependent

Jocelyn is not tall enough to reach the snacks on the top shelf of the pantry, so she needs a stool to help her reach. The graph shows the relationship between the height of the stool she stands on in feet, s, and the height she can reach in feet, r.

• r is independent

  s is dependent

• s is independent

  r is dependent

Is the event INDEPENDENT or DEPENDENT?

The spinner is spun twice. What is the probability that it lands on red first and then blue?

• Independent

• Dependent

Is the event INDEPENDENT or DEPENDENT?
If two gumballs are purchased, what is the probability that they are both white?

• Independent

• Dependent

Marietta picks a candle from the bunch, replaces it, and then selects one again. What are the chances that she selects a green both times?

• 1/144

• 1/12

• 1/36

• 2/24

• 2/12

In order to earn extra money on the weekends, Josie's string quartet performs at wedding receptions. The longer the reception, the more money they earn.

r = the length of the reception

m = the total amount of money Josie's quartet earns

Which of the variables is independent?

• r

• m

On a graph, which axis shows the independent variable?

• x-axis

• y-axis

• neither

• it changes

___________________: events do not affect one another and do not increase or decrease the probability of another event happening