Mew
Reputation
680
Next privilege 1,000 Rep.
Create new tags
 Aug 28 revised How to calculate the limit of $(\frac{x}{x+1})^x$ added 172 characters in body Aug 28 asked How to calculate the limit of $(\frac{x}{x+1})^x$ Jul 11 comment How to calculate CI for percentage difference? the percentage increase was normally distributed so I figure it is safe to use the standard T-test. Good to know that this isn't a huge violation of statistics. Jul 11 comment How to calculate CI for percentage difference? Thanks very much Bruce, very helpful. Jul 11 accepted How to calculate CI for percentage difference? Jul 10 asked How to calculate CI for percentage difference? Jul 3 comment Two different samples from different time periods. @RossMillikan, I'm not assuming normal distribution. I just calculated mean by adding up numbers and dividing by n. I calculated standard devation by finding average distance between squares of numbers. I haven't made any assumptions about the distribution though. Jul 3 comment Two different samples from different time periods. @Feyre, does credibility theory apply here?en.wikipedia.org/wiki/Credibility_theory Jul 3 comment Two different samples from different time periods. @Feyre, just a thought experiment I invented myself. I welcome the most technical answers. Jul 3 comment Two different samples from different time periods. For the sake of simplicity, I want to assume that all conditions are the same for the students, except the period of time is separated by 1 year. Now I agree the samples are statistically different, but the 1st sample had a much greater sample size, and thus might still have some weight on my future prediction, as the most recent sample could be an anomoly. Jul 3 asked Two different samples from different time periods. Jun 14 comment What are some simple (or elegant) functions that satisfy these conditions? @Crostul, that looks good - how can I adjust how "flat" it is? Jun 14 asked What are some simple (or elegant) functions that satisfy these conditions? Apr 22 answered There are 20 red marbles, 10 blue marbles, and 5 white marbles in a jar. Apr 21 comment Distribution Function Of a Random Variable X - Question @SuperRhinocerus, what are you studying? Apr 20 asked Log of many Logs Apr 20 comment A store is offering a 20% discount on a certain item. The store’s sale of the item is subject to a 6% sales tax. no problem glad to have helped :) Apr 20 comment A store is offering a 20% discount on a certain item. The store’s sale of the item is subject to a 6% sales tax. correct, the pure tax component itself is 0.06*0.8x, and thus the total amount including tax is 1.06*0.8x, whereas scenario 1 is 0.8*1.06x, which is equal. Apr 20 answered A store is offering a 20% discount on a certain item. The store’s sale of the item is subject to a 6% sales tax. Apr 18 comment Find the height of statue. @ClaudeLeibovici, yes my assumption was that the height of the observer was insignificant compared to the height of the tower, however without knowing the angles X and Y the validity of this assumption is still in the dark.