Data Unit

A scatterplot is shown. Which statement best describes the relationship between x and y in the scatterplot?

• The relationship is positive and linear.

• The relationship is positive and nonlinear.

• The relationship is negative and linear.

• The relationship is negative and nonlinear.

The point (-2, y) is on the same line as the points (1, 2) and (7, -1). What is the value of y?

Which equation below represents the data in the table?

• y = 3/2x + 2

• y = 3/2x - 2

• y = 2/3x + 2

• y = 2/3x - 2

A histogram displays the scores of students on a math test. If the mode of the scores is in the interval 70-79 and this interval has the highest frequency, what is a possible number of students scoring in this range if the total number of students is 200?

• 50

• 40

• 30

• 60

A scatter plot shows the relationship between study time and test scores for a group of students. What kind of relationship is likely if the points on the scatter plot trend upwards from left to right?

• Negative correlation

• No correlation

• Positive correlation

• Constant correlation

Find the median of the following data set: 3, 7, 9, 5, 12.

• 5

• 7

• 9

• 6

What is the range of the following data set: 12, 15, 10, 20, 18?

In a math competition, the scores of participants were recorded. If the mean score was 75, the median score was 80, and the mode was 85, which of the following statements is true?

• Most participants scored below 75.

• The scores were evenly distributed.

• At least two participants scored 85.

• The highest score was 85.

The median of the data set {12, 5, 7, 19, 12, 20} after arranging in ascending order is:

• 11.5

• 12

• 12.5

• 13