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Statistics Schoalrship (Common reservations (Small sample size, Random…
Statistics Schoalrship
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Inference
Confidence Interval (formation, reservation)
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Estimate the difference in mean and take into account weight variation + validity(need to use bootstrap C.I. created by resampling process, so that extreme cases would likely to be eliminated when interval given is too wide due to variability)
Experiment
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How to predict ? (what group, fit a regression line in another set of scores)
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How experiment is carried out (the difference between "before" and "after" would be calculate and check factors that affect experiment +minimise the effect)
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Random assignment was used to form 2 groups, ensure same condition,varied with time?
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Common reservations
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Coverage of each sample only focus on several areas=not representative of whole population (relatively isolated population)
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Time difference (age, season of year, based on 1 particular day etc.)
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Ascertain the difference
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Improve collection of data, (more stations record data, stations are more widely spread, technology allowing remote energy)
General
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Easy comparisons graph? (scatterplot gives a quick visual comparison, so change/trend is obvious)
Upper estimate + Lower estimate=using different gradients (low gradient gives higher protection with the same change)
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Interpretation, maybe x one value to get another value and then explain the change
Validity: not too far into future, long-term trend is steady
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