Comparing Data Sets Using Statistics

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.

Which statement is true about the data shown in the scatter plot?

• There is no correlation between the two sets of data.

• There is a positive correlation between the two sets of data.

• There is a negative correlation between the two sets of data.

• The correlation between the data is both positive and negative.

The number of hours spent on math homework each week and the final exam grades for twelve students in Mr. Dylan's algebra class are plotted. Based on a 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

Based on the line of best fit drawn, which value could be expected for the data in June 2015?

• 230

• 310

• 480

• 540

The scatter plot 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 the line, what is the best estimate for profit in the 18th month?

• $35,000

• $37,750

• $42,500

• $45,000

Which situation describes a negative correlation?

• the amount of gas left in a car's tank and the amount of gas used from it

• the number of gallons of gas purchased and the amount paid for the gas

• the size of a car's gas tank and the number of gallons it holds

• the number of miles driven and the amount of gas used

Brad and Tom are comparing their classes' scores on a math test. Both of their classes had mean scores of 80 on the test, but Brad's class had a range of 6 while Tom's class had a range of 30. If the highest possible score was 100, which class had the LOWEST score in it?

• Brad's class had the lowest score in it.

• Tom's class had the lowest score in it.

• The lowest score occurred in both classes.

• It cannot be determined from the information.

Sam rolled a die 75 times. On 39 of those rolls, he had a 6. Which statement is TRUE when the probabilities are compared?

• The theoretical probability is twice the experimental probability.

• The experimental probability and the theoretical probability are equal.

• The theoretical probability is greater than the experimental probability.

• The experimental probability is greater than the theoretical probability.

What is the median?

• 62

• 58

• 66

• 60

The difference between the greatest and least values in the data set.

• range

• interquartile range

• standard deviation

• mean absolute deviation