Scatterplots

Based on the scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant?

• $135

• $115

• $105

• $150

Based on the scatterplot, what is the best prediction of the average number of hours a person spends at work every week, if that person spends an average of 10 hours on recreational activities every week?

• 33 hours

• 85 hours

• 50 hours

• 65 hours

MOST MISSED STAAR QUESTION

• 240

• 190

• 210

• 300

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

The number of hours spent on math homework during one week and the math exam grades for eleven students in Ms. Smith’s algebra class is plotted on the scatter plot. Based on the plotted data, what is the correlation between the time spent on homework and the exam grade?

• positive

• negative

• no correlation

• cannot be determined

The scatterplot below shows the profit, by month, for a new company for the first year of operation. Kate drew a line of best fit, as shown in the diagram. Using this line, what is the best estimate for profit in the 18th month?

• $35,000

• $37,750

• $42,500

• $45,000

The scatter plot below represents the relationship between the number of peanuts a student eats and the student's bowling score. Which conclusion about the scatter plot is valid?

• There is almost no relationship between eating peanuts and bowling score.

• Students who eat more peanuts have higher bowling scores.

• Students who eat more peanuts have lower bowling scores.

• No bowlers eat peanuts.

The number of hours spent on math homework each week and the final exam grades for twelve students in Mr. Dylan's algebra class is plotted. Based on the line of best fit, which exam grade is the best prediction for a student who spends about 4 hours on math homework each week?

• 62

• 72

• 82

• 92

The graph illustrates the number of acres used for farming in Smalltown, New York, over several years. Using the line of best fit, approximately how many acres will be used for farming in the 5th year?

• 0

• 200

• 300

• 400

Emma recently purchased a new car. She decided to keep track of how many gallons of gas she used on five of her business trips. The results are shown in the table. Which equation best represents the line of best fit for the data?

• y = 12x + 9.3

• y = 0.2x - 0.75

• y = 5x

• y = 0.05x - 0.92