search for: pietrzyk

Hello R users wiser than I - I am trying to produce a boxplot with quantiles defined by the type 6 algorithm used mainly by Minitab and SPSS for a comparison study. I found how to compare the results in tabular form using the quantile(x, type = 6) function, but am stuck on how to show the results in a summary boxplot form. Would someone be able the help with this situation? Many thanks, Matt

Hello R Users! I have a question about the output of ARMAtoMA when used to calculate the variance of a model. I have a mixed model of the form ARMA(1,1). The actual model takes the form: X(t) = 0.75X(t-12) + a(t) - 0.4a(t-1) Given that gamma(0) takes the form [(1 + theta^2 - 2*theta*phi)/(1-phi^2)]*sigma(a), I would expect a process variance of 4.02*sigma(a) when I substitute 0.75 for phi and

Hello all- I would appreciate any guidance that can be provided. I am new to R and am using it exclusively in a statistics program I am undertaking that mainly references Minitab. My focus is on data modeling and further more multivariate data analysis as much of my work in involves chemical measurements from custom sensors using all sorts of transduction methods. I am looking for a

R users: I am trying to replicate the boxplot output I achieve with Minitab in R. I realize that R gives the user many more options on the algorithm used to calculate the IQR than Minitab, so I concentrated on type=6 when using the quantile() function in R. The problem I am having is setting the upper and lower limit of the whisker based on the nearest actual data that should be included. If

Hello, I am relatively new to R and have a rudimentary question, I think. How does one truncate the number of digits displayed after the decimal when viewing the results of analyses? My apologies if this question has been answered previously, I was not able to find references very easily. Thank you in advance, Matt [[alternative HTML version deleted]]

Hello all- I am a relatively new user of R and am working through a graduate course in Statistics that uses Minitab, SAS and some Matlab. I like using R but am having some trouble lining up the output from lda() to that of the other programs' results. The dataset below is a modified set of wine data from the Pinot Noir data set as an illustration of the 2 group LDA scenario. Mo Ba

Hello- I recently upgraded from R 2.4.1 to R 2.5.0 and have tried to used the search engine with minimal results. When I enter the command, > help.start() My browser opens with the main html interface. When I click the link for the search engine, the search page comes up, but when I enter a search term the result is always "undefined". I am looking on my end for browser

...2. Is there a canned function already present that does this or should I go ahead and just right a user defined function? Along the same lines, is there an easy way to extract the Sum of Squares column from an ANOVA analysis in order to compute the total sum of squares? Thanks in advance. Matt Pietrzykowski [[alternative HTML version deleted]]