Data Analysis (Y9)

What are the three measures of centre? (Check all the apply)

• range

• median

• quartile

• mode

• mean

The number that occurs most often in a data set is called the __________

• mean

• median

• mode

• range

A data set can have more than one mode.

• true

• false

If there are two modes, we say that the data set is bimodal.

• True

• False

The middle number in an ordered set of data is called the ___________

• mean

• median

• mode

• range

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

• true

• false

When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?

• List both numbers as the median

• Add the 2 numbers and divide by 2 (take the average)

• Pick the one you want

• Subtract the 2 numbers

The average is called the __________

• mean

• median

• mode

• range

To find the average of a set of numbers, add all the numbers in the data set and divide by __________

• 2

• largest number

• smallest number

• the number of items in the set

The highest number minus the lowest number in a set of data is called the __________

• mean

• range

• median

• maximum