HP Forum Archive 19

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HP 48G Statistics question Message #1 Posted by Ren on 25 Aug 2009, 11:30 a.m. Hello, In my Chemistry class we will be required to do statistical analysis (mean, std deviation, error, % error) on our lab experiments. I'm trying to use a HP48G to do this. In one of the sample questions the instructor has supplied, I need to calculate the above stats (mean, std deviation, error, % error) from this data (0.0064, -0.0169, 0.0201, -0.0096). Using the (right shift)STAT function, I entered the values, (checked Mean, Std Dev, and Total). The SD came out alright, but both Mean and Total came out 0 (zero) What do I need to do to get more decimal places? Right now in MODES my Number Format is in STD, But if I use one of the other modes (Fixed, Sci, or Eng) will I need to set the number of decimal places each time I'm given a different data set? Thanks, Ren dona nobis pacem

Re: HP 48G Statistics question Message #2 Posted by Chuck on 25 Aug 2009, 11:43 a.m., in response to message #1 by Ren I do believe the mean and total is exactly zero. No amount of decimals will change this.

Re: HP 48G Statistics question Message #3 Posted by Thomas Radtke on 25 Aug 2009, 11:48 a.m., in response to message #1 by Ren Mean and Total actually *is* zero ;-).

Re: HP 48G Statistics question Message #4 Posted by Ren on 25 Aug 2009, 11:54 a.m., in response to message #3 by Thomas Radtke Doh! (BLUSH!) Thanks guys! Move along, nothing to see here... Ren dona nobis pacem

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