1) Identify the river course at Scotts Bridge Mill a) Upper b) Middle c) Lower 2) What does Bradshaw predict for gradient at Scottsbridge? a) steep b) fairly steep c) rising d) none e) low 3) What is a stratified sampling technique? a) represents the investigated subject b) levelled sampling c) equal steps of measurement d) Measuring from the highest to lowest 4) What is a random sampling technique? a) taking an unseen sample at a measured step b) taking a selection from each group c) Selecting a range from secondary research d) an ad hoc selection 5) What is a systematic sampling technique? a) formula used to locate data b) data taken at regular intervals c) data taken at start middle and end. d) data taken continuously 6) What did we measure using stratified sampling? a) depth b) width c) velocity d) sediments size e) everything 7) What did we measure using a random strategy? a) depth b) width c) velocity d) sediment size e) everything 8) What did we measure using a systematic strategy? a) depth b) width c) velocity d) sediment size e) everything 9) What does reliability of sampling strategy mean? a) It produces a good result b) It is easy to produce results c) It repeats similar/same results d) It reproduces a range of results 10) What is accuracy of results? a) the data is a true to the actual b) the data is close to the actual c) the data is the mean of the actual d) the range of the data indicates the actual
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River Chess River Field work
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Jellye
Secondary
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