NOTES: PRESENTING DATA
Scientific Notation Expressing a value as the product of a number between 1 & 10 and a power of 10 Makes very large or small numbers easier 300,000,000 3.0 x 10 8 7.65 x Decimal is placed after first non zero # Spaces counted to give you the exponent 34,000 5.06 x 10 5 8.95 x
SI Units Units Describe a number Base Units QuantityUnitSymbol LengthMeterM MassKilogramKg TempKelvinK TimeSecondS
SI Units Derived Units QuantityUnitSymbol AreaSquare meter m2m2 VolumeCubic meterm3m3 DensityKilograms/ cubic meter Kg/m 3 EnergyJoule (kg. m 2 /s 2 ) J
Organizing Data Using tables or graphs Data Table Lines different variables
Organizing Data Line Graph Shows changes that occur in related variables X axis Independent variable Y axis Dependant Variable Slope ratio of change Direct proportion Ratio is constant between two variables Indirect proportion Product of the two variables is a constant
Organizing Data Bar graphs Compare a set of measurements or changes Circle Graphs Show percentages relating to a whole