How Science Works Precision Science at SUS The amount of scatter around the mean Science at SUS

How Science Works Accuracy Science at SUS How close a measurement is to its true value. Science at SUS

How Science Works Random errors Science at SUS Errors caused by readings spread around the mean value e.g faulty or inconsistent measuring techniques Science at SUS

Systematic/Zero errors How Science Works Systematic/Zero errors Errors caused by inaccurate equipment, equipment that doesn’t zero properly or by problems with a method. Science at SUS

How Science Works Reliability Science at SUS Carrying out repeat measurements checks the reliability of your results. Science at SUS

How Science Works Control Science at SUS Effect your results of an investigation and MUST be kept the same. Science at SUS

How Science Works Independent variable Science at SUS The variable you change to see what happens. Science at SUS

How Science Works Dependent variable Science at SUS The variable that you measure. Science at SUS

How Science Works A fair test Science at SUS This means only changing one variable and keeping everything else the same. Science at SUS

How Science Works Valid Science at SUS Evidence that directly answers the question Science at SUS

How Science Works Continuous variables Science at SUS Variables that can have any numerical value. You should use a line graph to show this type of data. Science at SUS

How Science Works Categoric variables Science at SUS Variables that are described by labels. You should use a bar chart to show this type of data. Science at SUS

How Science Works Resolution Science at SUS The smallest scale division of a measuring instrument e.g. most rulers have a resolution of 1mm. Science at SUS

How Science Works Range Science at SUS The interval between the highest and the lowest value e.g. 120-160cm Science at SUS

How Science Works Linear relationship Science at SUS A relationship that produces a straight line on a graph Science at SUS

How Science Works Anomalous results Science at SUS Can be spotted from data and excluded Science at SUS