Exploring Data

Given the data set below.  What is the mode?
24  27  19  21  18  23  21  20  19  33  30  29

• 19 only
• 21 only
• 19, 21
• 23, 33

What is the median of the data?

• 200
• 100
• 90
• 140

• A. More people spend below $90 than those who spend above $140
• B. Very few people spend between $90 & $100.
• C. The mean weekly grocery bill is $100.
• D. Half of people spend more than $100 on groceries each week.

Which of these statements is true?
I. There are no outliers.
II. 50% of heights are below 64 inches.
III. 75% of heights are above 60 inhces.

• I only
• I & II only
• I & III only
• II & III only

How many hours did someone in the 80th percentile spend doing homework?

• 7
• 8
• 9
• 10

If a set of data has a Median of 23 and a Mean of 30, what type of skew would you expect to see?

• Right Skew
• Normal Distribution
• Left Skew
• Not enough information.

What is the range of the scores?

• 20
• 25
• 30
• 35

Describe the shape of the graph.

• Skewed right
• Skewed left
• Uniform
• Symmetrical

If a set of data has a Median of 50 and a Mean of 20, what type of skew would you expect to see?

• Right Skew
• Normal Distribution
• Left Skew
• Not enough information.

Describe the shape of the graph.

• Skewed right
• Skewed left
• Uniform
• Symmetrical