Analysing Data

Question 1

What is the mean of a set of numbers?

Answer 1

It is the sum of all the numbers / the amount of numbers. It is the most commonly used average.

Question 2

What is the median of a set of numbers?

Answer 2

If you write the numbers in ascending order then the median is the central number. If there is no central number, then it is halfway between the two central numbers.

Question 3

What is the mode of a set of numbers?

Answer 3

The mode is the number or item that occurs most often in a set.

Question 4

What is the range of a set of numbers?

Answer 4

The range is the largest number minus the smallest number.

Question 5

What is the interquartile range of a set of numbers?

Answer 5

It is the upper quartile minus the lower quartile.