Precision introduction

Precision is all about how closely grouped a set of repeat readings are

Textbook Learning Objectives
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1	I can identify closely grouped data
2	I can identify scattered data
3	Precision describes how closely grouped a set of repeat readings are
4	Smaller increments/graduations on a measuring tool often gives higher precision
5	Precision depends only on the extent of random errors
6	Precise readings are not necessarily accurate