Averages

Question 1

How to calculate a mean?

Answer 1

Add up all the values and divide by the number of values

Question 2

How to calculate a median?

Answer 2

Arrange all values in order, select middle value. If an even number of values then the midpoint between the two central values.

Question 3

How to calculate a mode?

Answer 3

The most common value in the data

Question 4

How to calculate the range of data?

Answer 4

The difference between the highest and lowest values in a set of data

Question 5

Using this table calculate the mean of scores:

Answer 5

1+1+2+2+2+2+2+3+3+3+3+4+4+5 / how many numbers

OR

(1x2)+(2x5)+(3x4)+(4x2)+(5x1) / how many numbers

OR

2+10+12+8+5 / how many numbers

OR

37/14 = 2.64