STAAR Prep Station 2

The scatterplot shows the number of practice shots a basketball team took during each practice and the number of free throws the team missed in its next game.

• The data show that as the number of practice shots taken increases, the number of free throws missed decreases. This trend has a strong negative linear associations.

• The data shows that as the number of practice shots taken decrease, the number of free throws missed decreases. This trend has a weak negative linear associations.

• The data show that as the number of practice shots taken increases, the number of free throws missed increases. This trend has a weak negative linear associations.

• The data show that as the number of practice shots taken increases, the number of free throws missed decreases. This trend has a strong positive linear association.

An investor deposited $6,100 in an investment account.

- The account pays 3.1% interest compounded annually.

- The investor leaves the money in the account for 2 years.

- The investor makes no additional deposits or withdrawals.

What is the balance in the account at the end of the 2 years?

• $6,289.10

• $6,478.20

• $6,484.06

• $6,686.21

A mail carrier recorded the number of people in each household on the mail route and the number of pieces of mail each household received in one day. The scatterplot shows the data the mail carrier recorded.

Based on the data, how many pieces of mail should a household with 8 people expected to receive?

• 16

• 29

• 27

• 21

Jackson invested $680 in an account that earns 1.5% simple interest annually. He made no additional deposits or withdrawals for 2 years.

What was Jackson's account balance at the end of 2 years?

• $700.40

• $690.20

• $884.00

• $782.00

A family has a hot dog cookout every year. The scatterplot shows the number of people who have attended each cookout and the number of hot dogs that were eaten eat year.

This year 45 people are expected to attend the cookout. Based on the scatterplot, about how many hot dogs should the family prepare?

• 83

• 52

• 36

• 40

The scatterplot shows the relationship between the number of nights spent in a hotel and the total cost for the hotel.

Which conclusion is best supported by the scatterplot?

• As the number of nights spent in a hotel increases, the total cost for the hotel increases.

• As the number if night spent in a hotel increases, the total cost for the hotel decreases.

• As the number of nights spent in a hotel increases, the total cost for the hotel remains the same.

• There is no relationship between the number of nights spent in a hotel and the total cost for the hotel.

Larry put $1,287 into a savings account 8 years ago.

- The account earned 4% simple annual interest.

- He made no additional deposits or withdrawals.

Based on this information, what is the balance in dollars and cents in Larry's savings account at the end of these 8 years?

The list shows the weight in pounds of 6 puppies at birth.

3, 1.6, 2.8, 2.5, 1.7, 2.8

What is the mean absolute deviation of these numbers?

• 0.5

• 2.4

• 1.9

• 14.4

The scatterplot shows the relationship between the number of games a baseball team won in a season and the number of hours the team practiced each week during the season.

Based on the scatterplot, which is the best prediction of the number of games a baseball team won if the team practiced 3 hours each week during the season?

• 10 games

• 20 games

• 13 games

• 15 games

Monica wants to open a savings account with a deposit of $3,000. Monica will not make any additional deposits or withdrawals after she opens the account. Her bank offers two different savings accounts.

- Account X pays 2.1% simple annual interest.

- Account Y pays 2.4% interest compounded annually.

Which statement about these accounts at the end of 5 years is true?

• Account X would earn Monica about $62.70 more interest than Account Y.

• Account Y would earn Monica about $62.70 more interest than Account X.

• Account X would earn Monica about $45.00 more interest than account Y

• Account Y would earn Monica about $45.00 more interest than Account X.