Linear Association with a Table

Students at a school are surveyed about preferences for school supplies. The table shows the results. If a student prefers pencils, what is the approximate probability the student also prefers spiral-bound notebooks?

• 42.8%

• 24%

• 58%

• 35%

What percentage of the students polled voted for canidate 1?

• 57.5%

• 42.5%

• 52.5%

• 47.5%

According to the two-way table, a person who plays an instrument is most likely to:

• Not play an instrument

• Not play a team sport

• Play a team sport

• All of the above

What is the relative frequency of people that purchased no food?

• 10%

• 60%

• 15%

• 30%

The table below shows the number of pages and the approximate number of words in several books. Use the table to determine the type of association exists between these two variables. 

• Positive Association

• Negative Association

• No Association

• Not enough information to tell

The two–way frequency table below shows the number of customers who bought fruit that was either fresh or frozen at the grocery store. Select ALL that apply.

• Customers who bought oranges tended to pick fresh oranges.

• Customers who bought apples tended to pick frozen apples.

• Customers who bought fruit tended to pick frozen fruits.

• Customers who bought strawberries tended to pick fresh strawberries.

Of the students who cannot bike to school, what percent of them are boys?

• 4%

• 14%

• 13%

• 29%

Is this function linear or nonlinear?

• Linear

• Nonlinear

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.

• y = 1.5x + 12

• y = 12x + 1.5

• y = 0.67x - 8

• y = -8x + 0.67

The chart below tracts starting salaries for health care workers since the year 2000. Using linear regression, find the equation of best fit. Round decimals to 3 places.

• y = 839.721x + 27541.812

• y = 27541.812x - 839.721

• y = 27541.812x + 839.721

• y = 839.721x - 27541.812