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Standard Deviation Question
The mean and standard deviation of the 8 numbers shown below are 10 and 0.3 respectively. What percent of the 8 numbers are within 1 standard deviation of the mean?
The 8 numbers are: 9.4, 9.9, 9.9, 9.9, 10.0, 10.2, 10.2, 10.5
- by paulee
Tue Apr 27, 2010 3:25 am- Forum: Problem Solving
- Topic: Standard Deviation Question
- Replies: 2
- Views: 1380
GMAT Prep - Computing Income Tax - No Idea
Before being simplified, the instructions for computing income tax in country R were to add 2 percent of one's annual income to the average (arithmetic mean) of 100 units of country R's currency and 1 percent of one's annual income. Which of the following represents the simplified formula for comput...
- by paulee
Tue Dec 29, 2009 4:15 am- Forum: Problem Solving
- Topic: GMAT Prep - Computing Income Tax - No Idea
- Replies: 2
- Views: 1753