Coordinate Algebra Unit 4 – Describing Data Unit 4 Quiz Review

Name: ______Date: ______

Use the data below the answer the following. Remember to put the numbers in order!

81, 72, 91, 88, 71, 73, 82, 100, 81, 86

1. Find the range? ______2. IQR?______

3. Min? _____ 4. Q1?_____ 5. Median?______6. Q3?______7. Max?______

8. Draw a box plot:

9. Are there any outliers in the data set? Show your work!

10. Mean?______

11. MAD? ______

12. The table below gives the points scored by a Wheeler basketball player for 8 randomly selected games. Find the Mean, Mode, and Median.

Mean?_____ Median?______Mode?______

Wheeler Basketball Player
5 / 10 / 2 / 1 / 0 / 7 / 8 / 6

13. Which measure of central tendency probably gives the LEAST ACCURATE prediction of a "typical" amount of points this player contributes?

14. Describe the shape of the distribution (Center, Spread, and Shape)

15. Construct a frequency table from the following information:

A survey of 200 9th and 10th graders was given to determine what their favorite subject was. 68 said Basketball (40 which were freshmen), 42 said Football (20 which were sophomores), and 50 freshmen and 40 sophomores said Baseball was their favorite.

Football / Basketball / Baseball / Total
9th
10th
Total

Based on your table above, answer the following questions:

a)  Complete the Table(Remember to complete the margins)

b)  What is the probability of choosing a 10th grader who prefers Basketball?

c)  What is the probability of choosing a 9th grader who prefers Football?

d)  What is the probability of randomly choosing a 10th grader?

e)  What is the probability of randomly choosing someone who prefers Baseball?

f)  Out of the students prefer Math, what percentage is in the 10th grade?

g)  What is the marginal probability of picking students who prefers Basketball?

h)  What percent of students prefer Football and are in the 9th grade?