Unit 2 Test - 6th Grade

Statistical Questions & Biased Surveys

100

Statistical or Not Statistical? 

How tall are the students in Mrs. Castle's class? 

Statistical

200

Biased or Unbiased?  

Is Taylor Swift your favorite singer? 

BIASED

(but she really should be your favorite singer)

300

Statistical or Not Statistical? 

Are scary movies your favorite type of movie?

NOT statistical 

400

Biased or Unbiased?  Asking the first 75 students who walk into the school what their favorite color is? 

UNBIASED

Mean / Mode

100

What is the mode?  

15, 16, 14, 15, 13, 16, 17, 19, 17, 15, 25, 22, 13, 15, 14

15

200

Find the mode: 

22, 23, 33, 45, 43, 1, 2, 77, 8, 22

22

300

Find the mean:  

30, 42, 25, 15, 6

23.6

400

Find the mean: 

100, 15, 25, 30, 33, 37, 57, 22, 

39.875

Range / Median

100

Find the range: 

250, 249

1

200

Find the median: 

25, 33, 16, 9, 40

25

300

Find the range: 

13, 22, 5, 41, 33, 2, 15, 91, 16

86

400

Find the median: 

15, 13, 1, 2, 25, 6, 8, 9

8.5

Box & Whisker / Stem & Leaf

100

What is the range?

98

200

What is the upper quartile? 

10

300

What is the median? 

6

400

What is the mean? 

69.5