16.1 Measures of center

What is the mean of the data set : 6, 35, 8, 20, 6, 16, 7?

• 12

• 13

• 14

• 15

What is the median of the data set : 6, 35, 8, 20, 6, 16, 7?

• 20

• 8

• no median

• 35

You sent the same email to 10 of your friends. The number of hours it took them to respond was: 1, 1, 1, 2, 2, 3, 4, 5, 5, and 25. What are the mean, median and mode of this date?

• 49, 2.5, 1

• 4.8, 2, 1

• 4.8, 2.5, 1

• 4.9, 2.5, 1

Which number from the data set 1, 1, 1, 2, 2, 3, 4, 5, 5, and 25 is an outlier?

(a)  

The __________ is the middle number, or the mean of the two middle numbers, of the ordered data in a set.

• mean

• range

• median

• mean absolute deviation

The __________ of the data set is the sum of the data divided by the number of pieces of data.

• third quartile

• mean

• measures of center

• mode

Extremely high or low values in a data set are called __________ .

• outliers

• median

• mode

• first quartile

The __________ is the number or numbers that occur most frequently in a data set.

• average

• mode

• quartiles

• mean

On the semester final, Joe scored 85, Jill scored 89, and Bill scored a 99.What was the average score for these students? _________

• 91
• 273

Find the median:
3, 5, 7, 4, 3, 1

• 3 and 4
• There isn't one
• 3.5
• 3