Data Handling Conversion Graphs We use a conversion graph when two units have a linear relationship Metric weight in grams has a linear relationship with.

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Presentation transcript:

Data Handling Conversion Graphs We use a conversion graph when two units have a linear relationship Metric weight in grams has a linear relationship with imperial weight in ounces: 25g = 1oz 50g = 2oz 400g = ?

Data Handling Conversion Graphs Both grams and ounces can be plotted on a graph to show a diagonal line where they are equivalent. This graph can then be used to determine how many ounces there are in grams or how many grams there are in ounces.

Data Handling Conversion Graphs ounces grams Work out what will go on each axis. Decide on the division of units

Data Handling Conversion Graphs ounces grams Work out a suitable scale for each axis Plot the equivalent values and join up with a straight line

Data Handling Conversion Graphs ounces grams Once the diagonal line is plotted you can convert grams to ounces… …and ounces to grams

Data Handling Conversion Graphs ounces grams For values larger than the scale you can multiply up for example: 16oz. = 10oz. + 6oz. This is 250g + 150g = 400g Or 2 x 8oz