Investigating variation

test your knowledge of investigating variation :)

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What is sampling bias?
when investigators make unrepresentative choice
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what is the steps in random sampling?
divide study area into a grid of numbered lines, use random numbers generated by a computer to obtain a series of co-oridinates, then take samples at intersections of the co-ordinates
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Front

what is the steps in random sampling?

Back

divide study area into a grid of numbered lines, use random numbers generated by a computer to obtain a series of co-oridinates, then take samples at intersections of the co-ordinates

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