Stats

What is the mean?

4, 5, 6, 7, 3, 4, 10, 1

• 7

• 4.5

• 5

• 8

Find the mode:

3.8, 4.2, 4.0, 4.2, 4.2

• 4.2

• 3.8

• 4.0

• 4

What is the median of this data set?
3 , 17 , 17 , 11 , 8 , 13 , 5 , 18

• 11
• 12
• 13
• 17

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

What value is the lower quartile?

• 66
• 58
• 60
• 64

What is the median?

• 62
• 58
• 66
• 60

Marco bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Marco's scores?

• 193

• 127

• 60

• 66

What is the range of the data shown?

• 85
• 90
• 80
• 70

Find the average (mean) of these numbers:

5, 11, 2, 12, 4, 2

• 4.1

• 6

• 4.5

• 4

To evaluate the defect rate of its memory chips, an integrated circuit manufacturer tests every 100th chip off the production line.

• Biased Sample

• Unbiased Sample