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Selection Accuracy and Base Rates
A hundred applicants. Twenty of them would succeed in the job. Your process catches 80% of the good ones and rejects 80%...
Test Score Interpreter
A candidate scores 112. Another scores 118. On a test with a reliability of .85 and a spread of 15, those are...
Late Payment and Cash Tied Up Calculator
On the figures this ships with, a business invoicing $300,000 a year on 30-day terms is paid in 62. The interest on...
Break-Even and Margin of Safety Calculator
On the figures this ships with, the business breaks even at 149 units a month. At 200 it needs a second van,...
Customer Concentration Risk
Six clients, one of them 48% of the year. On the arithmetic that measures this properly, that is not six clients. It...
Churn and Customer Lifetime Value
Five per cent churn a month is forty-six per cent a year. Not sixty. Each month takes its share of whoever is...
Review Rating Confidence Calculator
4.8 stars from twelve reviews is worth 3.75 as evidence. 4.5 stars from four hundred is worth 4.36. The listing with the...
NPS and Customer Satisfaction Calculator
A Net Promoter Score of +30 from sixty replies is also, on the same data, anywhere between +10 and +50. Every dashboard...
Overtime and Cover Cost Calculator
At time and a half, an hour of your own person on $22 costs $33. An agency hour is $31. The familiar...
Job Evaluation Points Calculator
A job evaluation score looks objective. It is a weighted sum of judgements, and the weights were somebody’s opinion, usually written years...
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