AdvancedNumeric answer
An execution algorithm that looks worse · Part 3 of 3
A broker compares a new execution algorithm with the old one on 200 orders. Old: 80 easy orders with 72 good fills, and 20 hard orders with 10 good fills. New: 20 easy orders with 19 good fills, and 80 hard orders with 44 good fills.
Standardise both algorithms to the same mix, half easy and half hard orders. By how many percentage points does the new algorithm beat the old?
Answer with a number. Fractions, powers and expressions like 23/6 or C(52,5) are read correctly in practice.
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