Can AdMob be used just for iPhone app statistics/analytics or is it's sole purpose to add advertisements in the app? I want to add a statistics package to my app and track it's usage, and since Google bought AdMob I thought I should give it a try. But I don't want to display ads in my app. Is there any other good and free stats service,...
I am interested in tracking my users' pageviews on my site. Being that traffic is expanding very quickly, I am worried about robots, etc, and I also want to be able to use tracked data live to alter the user experience (so, while I do use Google analytics, it does not serve this purpose). What is the most efficient way to store my infor...
I'm interested in code statistics tools. Specifically I need to get statistics on Java EE code, but any code analyzer would do. Should I start creating one of my own or is there some project that you have used? ex. LOC, number of classes , libs ... What is your experience ? ...
Is there a direct way of getting the Nth combination of an ordered set of all combinations of nCr? Example: I have four elements: [6, 4, 2, 1]. All the possible combinations by taking three at a time would be: [[6, 4, 2], [6, 4, 1], [6, 2, 1], [4, 2, 1]]. Is there an algorithm that would give me e.g. the 3rd answer, [6, 2, 1], in the o...
Hi guys , Im trying to do principal component analysis in R . There is 2 ways of doing it , I believe. One is doing principal component analysis right away the other way is standardizing the matrix first using s = scale(m)and then apply principal component analysis. How do I tell what result is better ? What values in particular s...
Anyone know of a good statistics library for C? I'm looking for something that is commonly used and not a small project. EDIT: must be free! ...
I want to do a linear regression but I want to use Ordinary Least Squares which I think it is a type of Linear regression.. The software I use is SPSS and it only has linear regression, partial least squares and 2-stages least squares. I have no idea which one is Ordinary Least Squares (OLS) ...
Hi All I need to find some good statistics from reputable sources on the benefits of software developers working in a team. We use Scrum - so anything linked to this in particular would be really beneficial but not essential. I have 5 developers of differing skill levels and I feel that they need to work as a team. However, if my b...
Is it possible for a person working with statistic to replace his specialized programs by F#? I'm thinking about SAS/SPSS mainly? Any native support for it in F#? I am not talking about the trivial things as standard deviation and the likes, but for example item-response modeling. UPDATE : Dont't let the item-response modeling put...
I am trying to do a regression problem but I have 3 independent variables and not 1 so it is hard to detect outliers from a scatter graph. Any suggestions? ...
I need to plot a normal distribution and then shade some specific region of it. Right now I'm doing this by creating a plot of the distribution and overlaying it with a RegionPlot. This is pretty convoluted and I'm certain there must be a more elegant way of doing it. I Googled, looked at the docs, found nothing. Help me SO! I guess Mat...
Hello, How to make a linear regression on the chart displayed into your BIRT report. I have x and y data... but I don't see any function on eclipse BIRT to generate the linear regression... Any idea ? Many thanks ...
I'm using R to loop through the columns of a data frame and make a graph of the resulting analysis. I don't get any errors when the script runs, but it generates a pdf that cannot be opened. If I run the content of the script, it works fine. I wondered if there is a problem with how quickly it is looping through, so I tried to force it ...
I'm looking for a tool that will let me generate a data set with certain statistical properties. For example, suppose I want to generate 1 million integers with x number of outliers for use in testing. Are there any tools for generating test data sets like this? I don't necessarily need anything fancy, just some basic functionality. ...
I have a web widget, which is basically a JS file that people can reference to in their website and it does something cool lets say. currently I'm gathering statistics by doing an AJAX request to some dummy image file on my server, its like this: http://www.myserver.com/image.png?views=120&openings=80&close=65 I monitor these...
I am looking for a reliable source that would provide some statistics on what keys are the most frequently mistyped. For example: is "a" and "s" more commonly mistyped compared with "m" and "n"? if yes what are the underlying data i.e. "a" is mistyped instead of "s" when the previous letter is "o" in 25% of cases but contrary "s" is mi...
Is there an equivalent of dir function (python) in R? When I load a library in R like - library(vrtest) I want to know all the functions that are in that library. In Python, dir(vrtest) would be a list of all attributes of vrtest. I guess in general, I am looking for the best way to get help on R while running it in ESS on linux...
Let's say you have two lists, L1 and L2, of the same length, N. We define prodSum as: def prodSum(L1, L2) : ans = 0 for elem1, elem2 in zip(L1, L2) : ans += elem1 * elem2 return ans Is there an efficient algorithm to find, assuming L1 is sorted, the number of permutations of L2 such that prodSum(L1, L2) < some pr...
I don't think I need to explain exactly what the code does. The point is that while performing the chisq.test outside the loop, I get a result like this (expected): Chi-squared test for given probabilities data: observed X-squared = 185912, df = 5, p-value < 2.2e-16 but when I try to do the test in a loop, the expected resu...
Yeah, so I'm filling out a requirements document for a new client project and they're asking for growth trends and performance expectations calculated from existing data within our database. The best source of data for something like this would be our logs table as we pretty much log every single transaction that occurs within our appli...