Statistics Quiz

The test scores of 8 students are listed in the table on the left. Which students' scores would fall below the first quartile?

• A. Abe

• B. Melanie

• C. Steve

• D. Rhonda

Mr. Oros decides to organize his students’ algebra test scores into a box plot to analyze the results. What is the upper quartile score of the class?

• 72 points

• 84 Points

• 90 points

• 94 points

If 5 is added to each observation in the following data set, what is the relationship between the original standard deviation and the new standard deviation? 1, 5, 9, 15, 27, 32

• A. The original standard deviation is 5 times the new standard deviation.

• B. The new standard deviation is 5 times the original standard deviation.

• C. The new standard deviation is 5 times more than the original standard deviation.

• D. The original standard deviation is equal to the new standard deviation.

Tags

CCSS.7.G.A.1

The number of runs scored by the Gastonia Baseball Club for the last six games is shown below:

4, 9, 2, 4, 1, 6.

If the Stars scored 12 runs in their seventh game, which of the following statements is true?

• A. The mean and the median both increase

• B. The mean increases and the median remains the same

• C. The median increases and the mean remains the same

• D. Nothing has changed, both mean and median remain the same

The two sets of data represent the points scored by two basketball teams. What is the difference between the lower-quartile values for the two sets of scores?

• 4 points

• 8 points

• 6 points

• 2 points

Tags

CCSS.3.MD.B.4

Two teachers recorded test scores for a small group of students. What is the approximate difference in the variance of the two teachers’ test scores?

• 4.6 points

• 0.2 Points

• 5.5 points

• 5 points

These are the number of runs score in the first 6 baseball games by the Wildcats.

5, 8, 1, 5, 2, 7

If the Wildcats scored 7 runs in their seventh game, which of the following statements is true?

• A. The mean Increases and the median remains the same.

• B. The mean and the median both increase.

• C. The median and mean both remain the same.

• D. The median increases and the mean remains the same.

Three of the vertices of a square are located at (−1, 1), (4, 1), and (4, 6). What are the coordinates of the fourth vertex of the square?

Hint: Use Desmos to draw the points, and make your prediction!

• (−1, 6)

• (4, 5)

• (−1, 5)

• (0, 6)

Tags

CCSS.6.G.A.3

What are the coordinates of the midpoint of the line segment with endpoints at (3,4) and (9, 12)?

• (6, 8)

• (8, 6)

• (3.5, 10.5)

• (10.5, 3.5)

Tags

CCSS.HSG.GPE.B.6

Point K is the midpoint of line segment JL. If the coordinates of K are (−2,1) and the coordinates of J are (5,3), find the coordinates of Point L (endpoint).

• A. (−9, −1)

• B. (−1, −2)

• C. (−9, −3)

• D. (−1, 2)

Tags

CCSS.HSG.GPE.B.6