Standard deviation

R295

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In 35 minutes you will work out a sample standard deviation in three steps, to 2 decimals. You will also judge whether a process is steady enough to make a promise. And you will avoid dividing by n, stopping at the variance and forgetting to square.

SKU: PL-MCB-NUM-19
Category:

Description

Who it’s for: Anyone in business who works with prices, costs, budgets or reports and wants to be sure the numbers are right.

What happens in it: a short film shows a 60-minute mean, a tempting promise, and the number that says whether it will hold. In Your call you make the decisions in a real case: two teams with the same mean, one promise to customers and a lunch hour nobody planned. Then, in the boardroom, you make the case to Refilwe, the head of service, in three questions.

How it works: five scenes in about 35 minutes: the data film, the lesson, Your call, practice with fresh numbers that mark themselves, and the boardroom. Finish all five for your certificate. It is course 4 of 5 in the Making sense of data season of the Numbers for Business series.

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