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Created page with "==Key Stage 3== ===Meaning=== A '''mean average''' is when you add up all the numbers and divide by the number of numbers. ===About a Mean Average=== : A '''mean average''' i..."
==Key Stage 3==
===Meaning===
A '''mean average''' is when you add up all the numbers and divide by the number of numbers.
===About a Mean Average===
: A '''mean average''' is used in science to reduce the effects of [[Random Error|random errors]] in the [[results]] of an [[experiment]].
===Calculating a Mean Average===
Results: 5,3
: <math>Average = \tfrac{5+3}{2}</math>
: <math>Average = 4</math>
Results: 7.0, 6.8, 7.8
: <math>Average = \tfrac{7.0+6.8+7.8}{3}</math>
: <math>Average = 7.1</math>
Results: 12.3, 11.7, 11.4, 12.1
: <math>Average = \tfrac{12.3+11.7+11.4+12.1}{4}</math>
: <math>Average = 11.875</math>
: <math>Average = 11.9</math>
===Meaning===
A '''mean average''' is when you add up all the numbers and divide by the number of numbers.
===About a Mean Average===
: A '''mean average''' is used in science to reduce the effects of [[Random Error|random errors]] in the [[results]] of an [[experiment]].
===Calculating a Mean Average===
Results: 5,3
: <math>Average = \tfrac{5+3}{2}</math>
: <math>Average = 4</math>
Results: 7.0, 6.8, 7.8
: <math>Average = \tfrac{7.0+6.8+7.8}{3}</math>
: <math>Average = 7.1</math>
Results: 12.3, 11.7, 11.4, 12.1
: <math>Average = \tfrac{12.3+11.7+11.4+12.1}{4}</math>
: <math>Average = 11.875</math>
: <math>Average = 11.9</math>