CS 110 Lecture 5: Formulas
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Percentages: if a city has a 20% growth per year: And add that to the current # Why do we absolute ref: see slides. A ratio is a relationship between two #"s of the same kind. The ratio f bananas to apples is 1:4. The ratio of children to couples is 2. 3:1. Can we simply ratios: yes, by dividing the first by the second. Why ratios: to extrapolate future numbers. If the ratio of bananas to apples in a delivery is 4:1. The sum of the values divided by the number of the values: so if . 3: small numbers have trouble with outliers! If my study is tracking time to compute an algorithm, an outlier could be caused by someone else on the computer using the computer cycles of the memory. How do they affect the numbers: the skew the average, we record daily water usage, with bob. Bob 11 liters (he measured watering his garden)
