Single Variable Statistics

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%

• 95%

• 99.7%

• 50%

What is the MODE of this data?

• 90

• 85, 90, and 95

• 85 and 95

• None

What is the interquartile range?

• 4

• 6

• 2

• 8

The mean life of a tire is 30,000 km. The standard deviation is 2000 km.

Then, 68% of all tires will have a life between ___________ km and __________ km.

•  28,000 km and 32,000 km.

• 24,000 km and 34,000 km.

• 26,000 km and 34,000 km.

• 27,000 km and 31,000 km.

Find the mean of the data:
17, 27, 26, 2, 1, 21, 13, 16, 19, 5, 7

• 10.5

• 21

• 14

• 6

The mean is

• The middle score

•  Total & divided by number of scores

• The most frequent score

• The middle when in order

The median is

• The middle score

•  Scores added & divided by the number of scores

• The most frequent score

• The middle when in order

Which car club has the higher median?

• Cruisers

• Car Hops

• Skewed Left
• Skewed Right
• Uniform
• Symmetric

Find the median of these numbers:
4, 2, 7, 4, 3

• 2

• 5

• 7

• 4