Quantitative Data

What is the oldest age in this data set?

• 25

• 24

• 14

• Cannot be determined

How many people are recorded in this data?

• 15

• 10

• 4

• Cannot be determined

What is the definition of the mean?

• The average

• The middle number

• The difference between the highest and lowest numbers

• The number that occurs the most

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

• 2

• The minimum

• The maximum

• The number of items

In order to find the median, the data must be sorted from least to greatest first.

• True

• False

When finding the median, what do you do if there are two middle numbers?

• Add them together and divide by 2

• Write them both as the answer

• Give up

• Pick one

What is the median?

• biggest- smallest

• average

• the middle #

• # that happens the most

Here are some ages. Find the mean.

2, 4, 4, 5, 7, 7, 7, 9, 82

• 14.1

• 5.6

• 15.9

• 7

Here are some ages.

2, 4, 4, 5, 7, 7, 7, 9, 82

Does the mean of 14.1 years old really represent the majority of the data well?

• No. It's really too high for most of the ages.

• Yes. Most of the ages are around 14.1 years old

Here are some ages. Find the median.

2, 4, 4, 5, 7, 7, 7, 9, 82

• 7

• 14.1

• 6

• 5