Objectives  All can work out Upper and Lower Bounds of discrete data.  Most can apply Upper and Lower Bounds of continuous data.  Some students can.

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Presentation transcript:

Objectives  All can work out Upper and Lower Bounds of discrete data.  Most can apply Upper and Lower Bounds of continuous data.  Some students can extend what they have learnt to harder scenarios.

 Upper Bound  Lower Bound  Discrete Data  Continuous Data  Rounding  Greater than / Less than  Inequality

Discrete data can only take certain values. Continuous data comes from measuring and can take any value within a given range. Numerical data can be discrete or continuous. For example, shoe sizes, the number of children in a class, amounts of money the weight of a banana, the time it takes for pupils to get to school, heights of 15 year-olds.

The population of the United Kingdom is 59 million to the nearest million. What is the least this number could be? The least this number could be before being rounded up is: What is the most this number could be? The most this number could be before being rounded down is:

We can give the possible range for the population as: ≤ population ≤ This value is called the lower bound … … and this value is called the upper bound. This is an inequality. It says that the actual population of the United Kingdom is between and

Objectives  All can work out Upper and Lower Bounds of discrete data.  Most can apply Upper and Lower Bounds of continuous data.  Some students can extend what they have learnt to harder scenarios.

The height of the Eiffel Tower is 324 metres to the nearest metre. What is the least this measurement could be? The least this measurement could be before being rounded up is: m What is the most this measurement could be? The most this measurement could be before being rounded down is up to but not including: m

We can write the range for this measurement as: m ≤ height < m This value is called the lower bound … … and this value is called the upper bound. Key Point…..

Objectives  All can work out Upper and Lower Bounds of discrete data.  Most can apply Upper and Lower Bounds of continuous data.  Some students can extend what they have learnt to harder scenarios.

 A = 5 to the nearest unit  B = 16 to the nearest unit  What are the Upper and Lower Bounds of…  A + B  A X B  A – B 20, , , 12