181 reputation
7
bio website ouviemsp.com.br
location Sao Paulo, Brazil
age
visits member for 2 years
seen Oct 12 at 16:43

15% charimastic and the other part composed of pure working ethos.


Sep
24
awarded  Autobiographer
Jun
18
awarded  Popular Question
Jun
17
accepted how to see the logarithm as the inverse function of the exponential?
Jun
17
awarded  Commentator
Jun
17
comment how to see the logarithm as the inverse function of the exponential?
but I can't still see the connection that does the actual "undoing"...
Jun
17
asked how to see the logarithm as the inverse function of the exponential?
Apr
23
accepted How to get a top-notch Math education (high school level) online?
Apr
10
accepted Coefficient of variation - Help me decode this text
Apr
7
asked probability: when to multiply when to add?
Apr
7
asked Coefficient of variation - Help me decode this text
Apr
7
accepted Standard Deviation and Mean
Apr
7
comment Standard Deviation and Mean
@gammatester I don't have it.. the first part of the question reads as: "You are taking samples of the ages of two populations, A and B. Population A is all the residents of San Francisco, while Population B is all the residents of Los Angeles."
Apr
7
asked Standard Deviation and Mean
Feb
28
asked Natural numbers, a proof for the divisibility of any 3 given numbers?
Feb
3
comment How to get a top-notch Math education (high school level) online?
any book(s) in mind?
Feb
3
asked How to get a top-notch Math education (high school level) online?
Nov
29
comment How do I 'reverse engineer' the standard deviation?
you nailed it. thank you very much. I will try to get the value of N, but the newspapers loves to 'spice up' things by withholding information... quite sad actually
Nov
29
accepted How do I 'reverse engineer' the standard deviation?
Nov
29
comment How do I 'reverse engineer' the standard deviation?
for example, 73.5% of the people (only) uses facebook as their social media of choice, 16.34% only uses Orkut as their choice, etc. every entry corresponds to a social media web site and the percentage of people that solely uses them
Nov
29
comment How do I 'reverse engineer' the standard deviation?
that is the problem! I only have the percentage. I'm inferring that the newspaper got 'opinions' from a poll of say, 100 people. Opinions = what social network the utilize on a daily bases.