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2 cards from this section. Quick, good the night before a test.
Define standard deviation in your own words.
Think about consistency and variation.
What does a high standard deviation indicate?
Consider how rainfall might vary.
What does standard deviation measure?
It’s related to how 'spread out' your data is.
True or False: A lower coefficient of variation indicates less relative variability.
Consider what 'relative variability' implies.
Given the following monthly rainfall data for a region: Jan: 80 mm, Feb: 90 mm, Mar: 150 mm, Apr: 120 mm, May: 60 mm, June: 200 mm, calculate the standard deviation and CV.
Calculate the mean first to find standard deviation.
Analyze how the difference in CV between two regions (Region A: CV 15%, Region B: CV 30%) impacts agricultural strategies.
Think about how farmers would react to rainfall forecasts.
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