BRAINCAKEInterpreting Graphs 7
To read a value from a graph, draw a line from the known value on one axis to the line or curve, then across or down to the other axis. Use a ruler and read to the nearest half of a small square.
Interpolation is estimating a value that lies between measured data points. It is fairly reliable because it is within the range of the data.
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Key terms in this lesson
- water potential
- The pressure created by water molecules, a measure of the tendency of water to move out of a solution; pure water has a water potential of zero and solutes make it more negative.
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All 33 lessons in Biodiversity · All AQA AS-level Biology topics