Unit 1 Day 11

Find the MAD:
58, 38, 54, 48, 26, 36

• 43
• 20
• 10
• 12

Which measure of center best represents this set of data?
12, 13, 11, 16, 31, 14, 10, 15

• Mean
• median
• mode

For which group of data does the mean equal the mode?

• 4, 5, 5, 8

• 4, 4, 6, 6

• 4, 5, 6, 6

• 4, 5, 5, 6

What percent of the data is between 4.5 and 8?

• 25

• 50

• 75

• 100

Which data set shows a greater spread?

• Chess Club
• Checkers Club
• They have the same spread.
• You cannot tell from the box plots. 

Which club has the smaller spread?

• Cruisers
• Car Hops

Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative of all the students in the school?

• yes
• no

Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store.  She interviewed the 22 who said yes.  Is this sample of the supermarket's customers likely to be biased?

• yes
• no

A data set consists of the numbers 2, 2, 5, 6 and 15.  Which statement is true for this data?

• median > mean
• mean = mode
• mode < median
• median = mode

Find the mean of these numbers:
5,11, 2, 12, 4, 2

• 4.1
• 6
• 4.5
• 4