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Posted on Jan 02, 2017
There are plenty of casio 991 manuals here. Take your pick!
Dom't forget to leave feedback if it solves your problem. 'fixya'!
Posted on May 01, 2008
SOURCE: standard deviation
calculate mean of a data set:
1. Turn calc. on or press MODE SeTUP
2.Press 3 for STAT
3. Press 1 for VAR
4.Enter values for X column
5. WHen done entering press SHIFT 1
7.Press 2 to calculate the mean
Posted on Sep 19, 2009
Sorry to disappoint you: This calculator is not programmable.
Posted on Nov 30, 2009
Testimonial: "Very much appreciated, quick response etc. "
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