Statistical Reasoning

What does "mode" mean?

• average

• middle

• repeats the most

• variation

What is the mode in the set of data?
2,2,2,4,4,5,6,6,6,7

• 2

• 6

• 2 and 6

• 2,4, and 6

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

• 193

• 127

• 60

• 66

To find the mean of a set of numbers, add up all the items and divide by...

• 2

• The least number

• The maximum or biggest number

• The number of items in the data set

What is the interquartile range (IQR)?

• 4

• 64

• 60

• 8

Three out of every 10 students age 8-12 have a cell phone.  Suppose there are 30 students in Annabelle's class.  About how many would have a phone?

• 3

• 9

• 10

• 15

Leadership asked every tenth student in the lunch line if they enjoyed the newscast.  The result was 65% enjoyed it. How many students would you predict out of 1200 would have enjoyed the newscast?

• 780

• 800

• 680

• 7800

List the 5 number summary.

• 20, 40, 60, 80, 10

• 10, 20, 30, 40, 50

• 15, 25, 40, 50, 80

• 10, 40, 60, 70, 80

Which family on average is shorter?

• Maggie's 

• Lexi's

Which city has the lower minimum value?

• Millersburg

• Arcandia