Can experts solve this problem:
The Premise : Automated Box Storage & Retrieval
The Problem: Given the length of a storage lane, width of each stop with the lane, and speed of the vehicle...
I am trying to figure out a regular expression to match some URL's for a website. The expression needs to match the main URL and any random URL's.
The main URL would be: http://www.website...
I need some help. I need to determine the sample size to validate the extraction of medication instances from free text reports. I have something like (I'm making up the numbers since another ...
Hi,
I have an Excel spreadsheet that I'd like to use the IF statement for. However, if there is another way to get the following to work, please advise. I have a spreadsheet that has val...
I am trying to analyse some data using the coefficient of variation (stdev/mean), but I have two problems:
- the data is not 100% positive and:
- the mean is very close to zero (and as Wikip...
Hello,
I am trying to plot a graph that uses the mean instead of a density/count on the Y-axis. I of course want to use groups and I would like to also include error bars (standard deviation)...
Hello,
I think that either I am doing somehing wrong or there is something wrong with the var and covar functions in MS Excel. As far as I know, covar(X,X)=var(X). But if I try this in Exce...
I would like to accomplish in PHP something that easily done in Excel.
I have an array of data, I would like to calculate the Logarithmic trenline in order to graph it late ron.
I have f...
How does one calculate a trends (up 7%, down 7%, etc.) on a series on numbers?
I'm new to statistics and trying to learn how to discover a trend in my website visitor totals.
So for exa...
Hello,
I have a formula for intra-portfolio correlation but I think that it would be much easier to compute using matrices. Can someone show me please, how can I compute Q using the intrapo...
The grids are what is provided for the example. I am trying to figure out how the heck they are getting the E(S) and E(T).
(see code section)
I have tried 35/3 and get 11.666 for E(S) an...
I am looking for the source code, preferably as an Excel macro, to calculate the 3rd and 4th power polynomial regression coefficients, using the least squares method. I already have the quadra...
What is the probability of throwing 20 dice and getting all of them show 1? How can I calculate this?
Can someone please tell me how I can possibly implement probability distributions such as Normal, Exponential, Weibull, Gamma, LogNormal, Beta, Pearson6, etc using C++ libraries. I'm trying to...
I have dice with F faces.
I roll X dice, and for each die with a result higher than R (obviously R<=F) i can pick Y new dice.
Now i roll Y dice, and for each die with a result higher than S,...
V = Alog2B
I don't remember how to do this. Please give a simple example.
I have a CListCtrl that uses a virtual list with user drawn data allowing for mulitple selections.
When the user clicks on a header, the logic changes the sort order and re-sorts the data.
W...
I'm doing some work on prediction time series, and when I google for this, I often find references to "Mackey Glass". What is this? I can't seem to find much information about it on google, an...
Hi.
I've been trying to see how to beat these lottery wheels (http://lottery.merseyworld.com/Wheel/).
What I don't understand is why 163 tickets is required to guarantee a 3 ball win.
...
How is this obtained? I'm a visual learner. Show me the steps.
QUESTION:
simplify this fractional factorial expressions:
(2n-1)! / (2n+1)!
Another way to write this if I can:
(2n-1)! ...
Hi,
I am using a spreadsheet in OpenOffice at the moment to work out the mathematics of this but don't want to use spread sheet functions because I will transfer this to code in the near fu...
I am not sure how to calculate the marginal density functions for U and V. Any assistance would be greatly appreciated. Thanks in advance!
If I understand correctly, the marginal density fu...
I have a file that contains a bunch of Datablocks that are raw image files. The images can be put together to form a larger image. I need to figure out the positional information for the indiv...
Hello experts
The formula
(N! / k!(n-k)!) (p^k) (q ^ (n-k)) give me exact probablity. So lets say that I have this
N = 106
k = 56
p = 0.6732
q = 1-p
it will give me exactly k out...
Hello experts, I'm using System.Random class, instantiating it without specifying the parameter so it uses a time-dependent default seed value.
Then I use Rnd.Next(1, 33); to get a value be...
