Mean
The Arithmetic Mean is the average of the numbers: a calculated "central" value of a set of numbers.
To calculate it:
• add up all the numbers,
• then divide by how many numbers there are.
Example: what is the mean of 2, 7 and 9?
Add the numbers: 2 + 7 + 9 = 18
Divide by how many numbers (i.e. we added 3 numbers): 18 ÷ 3 = 6
So the mean is 6
Note: there are other types such as Geometric Mean and Harmonic Mean.
To calculate it:
• add up all the numbers,
• then divide by how many numbers there are.
Example: what is the mean of 2, 7 and 9?
Add the numbers: 2 + 7 + 9 = 18
Divide by how many numbers (i.e. we added 3 numbers): 18 ÷ 3 = 6
So the mean is 6
Note: there are other types such as Geometric Mean and Harmonic Mean.
See: Geometric Mean
- inverse
- inverse operation
- inverse property of addition
- inverse property of multiplication
- investing
- irrational number
- irregular
- irregular polygon
- isometric
- isosceles triangle
- iteration
- joule
- jump strategy
- kaprekars constant
- kilo-
- kilogram
- kilolitre | kiloliter
- kilometre | kilometer
- kite
- km/h
- knot
- lakh
- lateral
- latitude
- law of averages