Transformations Rotation means Reflection is when Translation means Enlargement Congruent – turning a shape is flipped moving/sliding the means to make same size, around a centre over a line shape without bigger same shape changing it Data Data is a collection of facts, like values or measurements Quantitative Qualitative – can be described Discrete - can be counted Continuous - can be measured The mean is the average of a set of numbers. To calculate it: add up all the numbers and divide by how many numbers there are 2, 2, 4, 6, 7, 10, 11 2+2+4+6+7+10+11 = 42 42÷7 = 6 the mean is 6 The median is the middle number in a set of numbers Always put the 2, 2, 4, 6, 7, 10, 11 the median is 6 numbers in order: smallest to largest! The range is the difference between the lowest and highest values 2, 2, 4, 6, 7, 10, 11 11-2 = 9 the range is 9 The mode is the number which appears most often in a set of numbers 2, 2, 4, 6, 7, 10, 11 the mode is 2
Transformations Rotation means turning around a centre Reflection is when a shape is flipped over a line Translation means moving/sliding the shape without changing it Enlargement means to make bigger Congruent – same size, same shape Data Data is a collection of facts, like values or measurements Quantitative Discrete - can be counted Continuous - can be measured Qualitative – can be described The mean is the average of a set of numbers. To calculate it: add up all the numbers and divide by how many numbers there are 2, 2, 4, 6, 7, 10, 11 2+2+4+6+7+10+11 = 42 42÷7 = 6 the mean is 6 The median is the middle number in a set of numbers 2, 2, 4, 6, 7, 10, 11 the median is 6 Always put the numbers in order: smallest to largest! The range is the difference between the lowest and highest values 2, 2, 4, 6, 7, 10, 11 11-2 = 9 the range is 9 The mode is the number which appears most often in a set of numbers 2, 2, 4, 6, 7, 10, 11 the mode is 2