hi,
after entering a set of data under SD mode, i could only retrieve the mean by pressing 'shift' + '1' +'=' (i.e. x bar). but can't retrieve the sample standard deviation when i pressed 'shift' + '3' + '=' (i.e. x sigma n-1). i ended up with 'Ma ERROR'.
the steps seems to be correct but i just can't retrieve sample standard deviation or population standard deviation (i.e. x sigma n).
can someone pls help me?
thanks,
huishan
Fx-911z: How To Retrieve Std Deviation
Started by
huishan
, Oct 19 2007 03:29 PM
2 replies to this topic
#2
Guest_Zwei9_*
Guest_Zwei9_*
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Posted 02 November 2007 - 10:30 PM
I have a fx-991MS, so I don't know if this will help but, here goes nothing:
Assuming you're working in 1 variable mode (SD mode, not REG mode), and this is the list I'm using for this case
{9, 5, 3, 4, 56, 85, 102.359, 65, 1, 5}
Average = 33.5359
Mode, Mode, 1 (SD)
Input data (9 M+, 5 M+, 3 M+, 4 M+, 56 M+, 85 M+...)
For the sample standard deviation it'd be
SHIFT, 2 (S-VAR), 3, =
Answer: 39.40360812
For the population standard deviation it'd be
SHIFT, 2 (S-VAR), 2, =
Answer: 37.3815449
If your answers are different, check you entered the correct numbers.
If you don't get any answer (e.g. MA ERROR), the either:
1. The fx-991Z model has different steps than the fx-991MS model, or
2. I have no clue as to what could possibly be wrong
Hope I helped
Assuming you're working in 1 variable mode (SD mode, not REG mode), and this is the list I'm using for this case
{9, 5, 3, 4, 56, 85, 102.359, 65, 1, 5}
Average = 33.5359
Mode, Mode, 1 (SD)
Input data (9 M+, 5 M+, 3 M+, 4 M+, 56 M+, 85 M+...)
For the sample standard deviation it'd be
SHIFT, 2 (S-VAR), 3, =
Answer: 39.40360812
For the population standard deviation it'd be
SHIFT, 2 (S-VAR), 2, =
Answer: 37.3815449
If your answers are different, check you entered the correct numbers.
If you don't get any answer (e.g. MA ERROR), the either:
1. The fx-991Z model has different steps than the fx-991MS model, or
2. I have no clue as to what could possibly be wrong
Hope I helped
#3
Guest_Quitzy_*
Guest_Quitzy_*
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Posted 23 July 2009 - 01:37 PM
I know this reply is YRS late but I myself just searched google a long long time looking for the ans to that same qn. Couldn't find anyth.
BUT after a lot of trial & error, have finally figured it out! When u enter DT, just press the button without using shift. No problem getting std dev after that.
Hope this reply helps others out there with the same problem!
BUT after a lot of trial & error, have finally figured it out! When u enter DT, just press the button without using shift. No problem getting std dev after that.
Hope this reply helps others out there with the same problem!
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