questions about unseen fieldwork 5.0 / 5 based on 1 rating ? Geographypaper 3 fieldwork revisionGCSEAQA Created by: lamble2002Created on: 18-12-17 23:14 random sample each side has an equal chance of being selected= no bias however study sites may be clustered so a whole area may not be studied 1 of 6 systematic sample =advantage allows continuous changes to be investigated 2 of 6 systematic sample disadvantage important sites may be missed making results inaccurate 3 of 6 stratified sample advantage similar sites to take measurements allows significant changes to be investigated where other techniques will not be selected 4 of 6 stratified sample disadvantage does not allow a continuous change to be measured and may result in specific sites being more clustered 5 of 6 why would a student use the median or mean to investigate a set of data median uses the rank of data while the mean measurements central tendency and ignores all the anomalies influence are ignored 6 of 6
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