# Mathematics Mindmap Paper 2

- Created on: 01-04-17 09:12

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- Mathematics Paper 2
- Probability (P)
- Number of times event can happen / Total number of possible outcomes
- Usually given as a fraction, but can be decimal or %
- The chance an event may happen
- Outcome: the result of an event happening
- Probability Scale: Probability ranges from impossible (0) to certain (1)
- The higher the probability of something, the more likely it is
- Key Terms
- Impossible
- Unlikely
- Even
- Likely
- Certain

- Tree Diagrams
- Experimental Probability
- Probability for experiment results
- Recorded as RELATIVE FREQUENCY
- RELATIVE FREQUENCY Number of times this outcome occurs / Number of times you tried

- Recorded as RELATIVE FREQUENCY

- Probability for experiment results

- Substitution
- Putting numbers in place of letters to calculate the value of an expression
- BODMAS
- Brackets, Order, Divide, Multiply, Add, Subtract

- BIDMAS
- Brackets, Indices, Divide, Multiply, Add, Subtract

- Perimeter (P)
- The distance all around the edges of a 2D shape
- Found by adding all the sides of the shape together
- Measured in cm, m, km

- Area (A)
- Total surface of a shape
- Measured in units²
- Of a circle
- = Pi r²

- Of a rectangle
- = l x w

- Angles in Triangles
- Add up to 180°
- Corresponding angles
- Make an F shape that can be upside down or back to front
- Are equal

- Alternate angles
- Are equal
- Make a Z shape that can be back to front

- Vertically opposite angles
- Are equal
- Make an X shape

- Base angles in Isoceles are equal
- All angles in an equilateral triangle are equal

- Volume of Cuboids
- l x w x h
- Measured in cm/m/km³

- Percentage Increase
- To increase the amount: Multiply by (1 + % as decimal)
- To find percentage increase: Subtract the two figures away from each other, then divide your answer by the original amount and multiply by 100

- Reading and Interpreting Graphs and Charts
- Straight line shows stationary
- The steeper he gradient the faster the speed
- Pictogram: uses pictures to represent the number of items
- Bar Chart: uses vertical or horizontal bars of equal width to represent items; frequency given by the length of a bar
- Pie Chart: uses angles in a circular chart to represent values in proportion
- Scatter Graph: compares two sets of data. Relationship is called correlation
- Positive correlation - upwards slope
- Negative correlation - downwards slope

- Stem and leaf diagram: uses stem with leaves to display data and shoe distribution

- Index Laws
- Multiplying = Add powers
- Dividing = Subtract powers
- Brackets = Multiply powers
- Anything to Power 0 = 1
- A negative power gives a reciprocal
- If no power is given, assume it is 1
- A fractional power gives a root

- Probability (P)

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