Mean/Median/Mode/Range

What is the mean?

• The average value

• The middle item of data when

  all the data is arranged in order.

• The most common number

• The difference between the

  highest and lowest values in a set of numbers.

What is the median?

• The average value

• The middle item of data when

  all the data is arranged in order.

• The most common number

• The difference between the

  highest and lowest values in a set of numbers.

What is the mode?

• The average value

• The middle item of data when

  all the data is arranged in order.

• The most common number

• The difference between the

  highest and lowest values in a set of numbers.

What is the range?

• The average value

• The middle item of data when

  all the data is arranged in order.

• The most common number

• The difference between the

  highest and lowest values in a set of numbers.

What is the range of this data?

3,4,3,4,5,2,6,7,3,3

• 3-7

• 1-7

• 1-10

• 2-7

A student takes 10 random 1m² quadrat readings and gets this data for number of plants:

3,4,3,4,5,2,6,7,3,3

What is the mean number of plants per m² ?

• 5 plants per m²

• 4 plants per m²

• 3 plants per m²

• 6 plants per m²

What is the mode of this data?

3,4,3,4,5,2,6,7,3,3,

• 3

• 4

• 2

• 5

What is the median of this data?

3,4,3,4,5,2,6,7,3,3

• 1

• 2

• 4

• 3

What is the mean of these numbers:

3, 5, 7, 9

• 6

• 24

• 4

• 8

The heights of some students are given.

158cm 172cm 164cm

164cm 167cm 159cm

What is the range of the heights?

• 13cm

• 14cm

• 164cm

• 330cm