Measures of Center and Statistical Questions

Determine the median of the data set below:

height of students (inches): 63, 59, 57, 66, 62, 60, 64

• 64

• 57

• 62

• 60

Find the median of that data on this frequency table.

• 20

• 45

• 30

• 18

What is the mode for this data set?

• 3

• 7

• 7.5

• 9

What is the mean of the data, rounded to the nearest tenth?

• 6.0

• 8.0

• 9.3

• 6.8

What is the mean of this data, and what is a general observation you can make?

• 80, most students scored higher than 80

• 85.83, most students score 80 or higher

• 80, most students scored lower than 80

• 85.83, most students scored lower than 80

• Mean will decrease.

• Mean will increase.

• Mean will stay the same.

• Use the mean, the teacher's age, an outlier, won't affect the mean as much as the other measures.

• Use the median so the teacher's age, an outlier doesn't affect the middle.

• Use mode, the number on the list the most is best.

What is the mean of this data set?

• 43

• 46

• 567

• 63

If there is an outlier in your data (a point very far from the other data, or a very long whisker), what is the best measure of center to use and why?

• Median is best because the outlier skews the data.

• Mean is best because the outlier doesn't skew the data.

• Mode is always the best measure of center because it shows the most.

What are the values for the five number summary?

• 2,4,6,8,10

• 0, 3,5,11,20

• 2, 2.5, 4.5, 10.5, 18

• 2, 3, 5, 11, 18