Question about HP 33s Calculator

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Programing the hp33s

I need to compute a series of 20 measurements and produce a mean & standard deviation quickly. this is for a timed exam. I have the manual and tried to follow their steps to no satisfaction. Please help

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  • glenne2001 Jan 26, 2009

    refer to the 33s manual; Statistical Operations 11-1 entering one variable data. once you have entered the data using the top left key (Sums+) use the other top keys to select yor answer.


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Check out chapter 11 in the user's guide. This chapter gives you the run down on how to calculate what you are looking for.

Posted on Dec 02, 2010

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Mean absolute deviation.
Let's break it down into its components.
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Let's do an example. Population 3 7 4 2. Total 16. Mean (Average) 16/4 = 4.

3 - 4 = -1 absolute value 1
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4 - 4 = 0
2 - 4 = -2 absolute value 2

Sum of these deviations 1 + 3 + 0 + 2 = 6
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  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
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