search for: barron

We're seeking interns for the summer of 2014 here at Barron's the Dow Jones newsweekly that's searched out good investments and financial frauds since 1921, when our founder exposed Charles Ponzi. We're at the center of the financial world in New York and can pay a bit of a stipend to cover the city's high living costs. Here's the blurb...

...frame ? I have similar variables in two separate data frames, and I would like to show their two histograms/densities in a single picture. Same units, scale, range for both, so I'm simply trying to draw one and then add the other to the picture. Nothin' fancy. Bill Alpert Sr. Editor Barron's 212.416.2742 william.alpert@barrons.com [[alternative HTML version deleted]]

Hi, 1. How do I construct 95% prediction interval for new x values, for example - x = 30000? 2. How do I construct 95% confidence interval? my dataframe is as follows : >dt structure(list(y = c(26100000, 60500000, 16200000, 30700000, 70100000, 57700000, 46700000, 8600000, 10000000, 61800000, 30200000, 52200000, 71900000, 55000000, 12700000 ), x = c(108000, 136000,

...h gives: "Error in parse(file, n = -1, NULL, "?") : syntax error at the line 4: } 5: else" Maybe, there is something I don't understand. I should be very grateful if you would help me to solve this issue. Best regards, Xavier ___________________________ Xavier Barron 20, rue de la Pierre Lev?e 75011 Paris 0143381141 / 0675062109

It's not too early for statistically-adept students to think about underpaid, but life-altering, internships for the summer of 2012. In fact, after November 1st it may be too late to apply here at Barron's. This will be the second summer we've offered paid internships, which means that applicants can now poll the hapless folks who interned this past summer. Contact me, Bill Alpert, and I'll put you wise. Meanwhile, here's the public service announcement: Do some good. Intern at...

Hi I have used a polycor package for categorical correlation coefficients. I run the following script. But there were no results. Could you tell me how to correct the script? Thanks in advance, vars <- names(sdi) for (i in 1:length(vars)) { for (j in 1:length(vars)) { paste(vars[i]," and ", vars[j]) polychor(vars[i], vars[j]) # corr } } -- Kum-Hoe Hwang, Ph.D.Phone :

Hi, I would like to estimate something like y = a + b*d2*y + c*d3*y where the dummies are created from some vector d with three (actually many more) levels using factor(). But either there is included the variable y or d1*y. How could I get rid of these? Example: x = c(1,2,3,4,5,6,7,8) y = c(3,6,2,8,7,6,2,4) d = c(1,1,1,2,3,2,3,3) fd = factor(d) lm(x ~ fd*y) gives: Coefficients: (Intercept)

...error message that tells me that an error log has been generated. However, I've been unable to find this error log. Could someone tell me where it should have been written to and/or what the name of the file should be? Thanks, Dave =================================================== David Barron Jesus College Oxford OX1 3DW 01865 279684 [[alternate HTML version deleted]]

Hey all, Is there a solution for dragging an item out of a scrollable container? It seems to just scroll the container for me. Sorry if this is in the FAQ, the site''s been unreachable for me since last night. Thanks -Scott

Hi. Please, how can I put together 2 or more lines at the same scatterplot ? Example: measures of protein intake (quantitative) of 4 children over 30 days, by day. How to plot all children at same graphic: Protein X Time ? Is there any command like "overlay" ? Thank you, Mauricio

Dear all, I am new to R. I wish to use R's multiple imputation to deal with missing data. I have a data set with the size around 300 observations and 150 variables. I checked the help function in R and could not locate how to write the codes for this. can anyone give a hand? Do appreciate your time and kindness! Q. [[alternative HTML version deleted]]

...ms not to work properly if data=parent.frame(). Should it? Apologies if this is something known, or if I'm doing something wrong! I'm using R 1.6.2 under Windows 2000 Pro and lattice Version: 0.7-1 Date: 2003/03/15. Thanks, David =================================================== David Barron Jesus College Oxford OX1 3DW 01865 279684

Hi, I try to calculate Kendall's W coefficient and I have a bizarre error. little.app.mat<-matrix(c(1,3,4,2,6,5,2,4,3,1,5,6,3,2,5,1,5,4),nrow=3,byrow=TRUE) print(kendall.w(little.app.mat[-1,])) >>> Kendall's W for ordinal data >>> W = 0.7753623Error in if (is.na(x$p.table)) { : argument is of length zero

Does anyone know a good way to hook into the AR to_xml() method to allow for adjusting datetimes to a user''s timezone? Basically I want a user to be able dump all their data before cancelling an account. I store all datetime info as UTC as per the recommendations of Jamis Buck and Scott Barron in the Rails Recipe article "Dealing with Timezones". Come to think of it I bet 37Signals already has figured out a way to do this as they allow users to dump data... Any help would be much appreciated. Thanks, Zack

I was looking for an R function to turn a matrix into a LaTeX table; did an R site search using Jon Barron's machine and turned up the latex() function in the Hmisc package. But the Hmisc package is an Splus package, and appears not to be available for R --- there is no hint of it in the list of contributed packages on CRAN. I had a look at the Hmisc package (via statlib) and there was no hint of...

Dear all, how can I convert an m x n incidence matrix into an m x m adjacency matrix or an n x n adjacency matrix? The current matrix contains binary data, hence the new matrix would contain counts of common occurrences. Thank you for your help. Phil

So I was attempting to determine what version of Rails I was running; I first I did rails -v which went off and created a -v directory. I then did a rails --help which created a --help directory... I dont know if you have ever tried, but deleting a directory named --help from the cli is about impossible! I had to write a ruby script to clean up the mess I made!

(Many thanks to David Barron & Jonathan Baron for pointing me to 'recode' in the 'car' package). I think I've been told this before, but how do I search for a function/keyword in libraries I don't yet have installed? (ie. on the CRAN site I tried the search engines with "recode" etc., bu...

Hello, Or even simpler, without ifelse, colordata$response <- colordata$color == 'blue' + 0 Hope this helps, Rui Barradas ? Citando David Barron <dnbarron at gmail.com>: > ifelse is vectorised, so just use that without the loop. > > colordata$response <- ifelse(colordata$color == 'blue', 1, 0) > > David > > On 7 April 2016 at 12:41, Michael Artz <michaeleartz at gmail.com> wrote: >> Hi I...

Thaks so much! And how would you incorporate lapply() here? On Thu, Apr 7, 2016 at 6:52 AM, David Barron <dnbarron at gmail.com> wrote: > ifelse is vectorised, so just use that without the loop. > > colordata$response <- ifelse(colordata$color == 'blue', 1, 0) > > David > > On 7 April 2016 at 12:41, Michael Artz <michaeleartz at gmail.com> wrote: > >&...