# Mathematics Mindmap Paper 2

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