Name:    Lesson 4: Exploring Statistics

1.

Use the following information to answer the questions below.

 Ribbon Colour Length (cm) Blue 32 Red 82 Green 45 Yellow 99 Purple 102 Pink 15 Black 75 White 15 Grey 75 Gold 2 Brown 75 Silver 15

What is the range of the data?
 a. 2-102 b. 15-75 c. 99-102 d. 15-102

2.

What is the mode of the data?
 a. 15 and 75 b. 82 c. 15 d. 32 and 72

3.

What is the median of the data?
 a. 45 b. 60 c. 75 d. 82

4.

What is the mean of the data?
 a. 52.7 b. 56 c. 62.7 d. 58.5

5.

Scott earned the following test scores in Math this term.

66%            89%            90%            89%            44%            56%

What is the range of his test scores?
 a. 44-90 b. 89 c. 56-90 d. 44-89

6.

What is the mean of his test scores?
 a. 72.3 b. 73.3 c. 76.5 d. 77.8

7.

Which test score lowered Scott’s mean score?
 a. 44% b. 56% c. 60% d. 89%

8.

What is the mode of Scott’s test scores?
 a. 89 b. 90 c. 60 d. 75

9.

Which one of these would be the best for Scott to take as his final grade?
 a. mean c. median b. mode d. none of the above