Measures of Centre and Spread

How many measures of centre are there?

• 1

• 2

• 3

• 4

Measures of centre tell us:

• How the data clusters

• Where most of the values sit

• A and B

• None of the above

The mode is:

• The average value

• The most common value

• The middle value

• The difference between the highest and lowest value

The mean is:

• The average value

• The most common value

• The middle value

• The difference between the highest and lowest value

The median is:

• The average value

• The most common value

• The middle value

• The difference between the highest and lowest value

A data set can only have 1 mode

• True

• False

Mean = sum of scores / 2

• True

• False

For a data set with an EVEN number of values, the median will be an actual value in the data set.

• True

• False

Measures of spread describe:

• How far values are spread from the centre

• How far values are spread from each other

• A and B

• None of the above

The range is the difference between the highest and lowest value

• True

• False