[Nfbf-l] Anyone good at Math?

[Kathy Roskos]

Yes, that does make sense to me.  You explained it very well and simply 
enough for even my mathematically challenged brain to understand. Since the 
mathematical processes are so important in statistics, the right or wrong 
answer to this equation can significantly change the final correlation 
numbers. In other words, getting these figures right or wrong could mean the 
difference between passing or failing an assignment.

Thank you, thank you, thank you!
----- Original Message ----- 
From: "Bill Outman" <woutman at earthlink.net>
To: "'NFB of Florida Internet Mailing List'" <nfbf-l at nfbnet.org>
Sent: Monday, October 22, 2012 10:31 AM
Subject: Re: [Nfbf-l] Anyone good at Math?


> Hi, Kathy.
>
> First, take the 3.9 times 2, as your example gives. That gives 7.8 in this
> case. Since you have one negative and one positive number, the result is a
> negative number, in this case -7.8.  In the case of both numbers being
> positive the result is positive, that's what we deal with mostly in 
> everyday
> life.  Two negative numbers would also result in a positive product, 
> despite
> what your English teacher said about double negatives.  This is the rule 
> of
> thumb we learn in basic algebra.
>
> So the key is getting the product and then determining the appropriate 
> sign.
>
>
> I hope that was clear enough for you.
>
> Bill Outman
>
>
> -----Original Message-----
> From: Nfbf-l [mailto:nfbf-l-bounces at nfbnet.org] On Behalf Of Kathy Roskos
> Sent: Monday, October 22, 2012 9:37 AM
> To: NFB of Florida Listserv
> Subject: [Nfbf-l] Anyone good at Math?
>
> I know this is out of the normal topics on this list, but I don't know 
> where
> else to try.  I am taking a statistics class and am totally, hopelessly
> mathematically challenged.  I know there are smart people on this list, so 
> I
> figured I would reach out for help.
>
> I am trying to multiply a negative number by a positive number.  I am 
> trying
> to find the solution to negative 3.9 times positive 2.  depending on how I
> enter it into my dinosaur of a calculator, the answer comes out different.
> I have come up with either negative 7.8 or negative 1.9. Don't know what I
> am doing wrong, but it is driving me crazy, and it is vital to this
> assignment that I get the calculations right.
>
> Can anyone PLEASE help?
>
> Kathy
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