What does mean mode range and mediam mean?

Answer 1

The range is the spread of data - the largest number minus the smallest.

The mean, mode and median are types of average. The mean is the sum of the numbers divided by the number of numbers (e.g. the mean of 1, 1, 3, 5 and 8) is 3.6). The mode is the number that appears most often (1 for the previous example). The median is the 'middle number'. To work it out, place the numbers in order from lowest to highest. If the number of numbers is odd, the median is the number in the middle (3 for the given example). If the number of numbers is even, the median is the mean of the two middle numbers (e.g. for 1, 1, 3 and 5, the middle numbers are 1 and 3 so the median is 2).

The mean and median often are similar but the mode is often greatly different to the two other averages.