search for: akar

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2009 Mar 25
5
histogram plots with many different samples
Dear R users, I would like to draw some histograms as seen in the page whose address I wrote below. I searched through the web a lot and I found a page which describes how I can do it for older versions of R. For newer versions they recommend to install the package R.basics in R.clusters but this does not exist. The address of the web page is http://www1.maths.lth.se/help/R/plot.histogram/
2009 Feb 04
3
chi squared goodness of fit test with R
...o cut the data into bins and calculate the expected numbers in each bin. Moreover I have to count the observed data in each bin and I do not know how to do that either. I really need help as its an essential part of my study. I appreciate if you could help. Thank you in advance, regards, Evrim Akar [[alternative HTML version deleted]]
2009 Feb 23
1
incomplete data analysis
Dear R users, First of all, thank you for your help about goodness of fit tests. I have another set of data and i am sure it is incomplete. I searched for incomplete data analysis with R but I could not find any suggestion, or method. Lets say (totally hypothetical situation) from a distribution you can generate a continuous random sample between the numbers 0 and 100. but I have data from 20 to
2009 Jul 08
1
linear regression and testing the slope
Dear All, First of all I would like to say I do not have much knowledge about this subject, so most of you can find it really easy. I am doing a linear regression and I want to test if the slope of the curve is 0. R gives the summary statistics: Call: lm(formula = x ~ s) Residuals: Min 1Q Median 3Q Max -0.025096 -0.020316 -0.001203 0.011658 0.044970 Coefficients:
2009 Jul 09
2
How to Populate List
...(Mike HC)    8. Import xlsx file in Ubuntu 9.04 (Rodrigo Aluizio)    9. Re: R 2.9.0 plot still forcing current time zone (jim holtman)   10. Re: How to re-order panels and y-axis values in trellis       display    using lattice (Deepayan Sarkar)   11. linear regression and testing the slope (evrim akar)   12.  transform multi skew-t to uniform distribution (Adelchi Azzalini)   13. Re: ReShape to create Time from Observations? (Mark Knecht)   14. R regular expression to extract words with the query string.       (Praveen Surendran)   15. system() how to make a program run a specific file - RUN and...
2009 Mar 18
0
modification of the function ecdf
Dear R users, I am trying to minimize the distance between my data points and theoretical gamma distribution over shape and scale parameters. the function "mde" from actuar package does it for empirical distribution function and theoretical gamma distribution. However, I would like to minimize the distance by using only the data between 0.1 and 0.9 quantiles. I cannot use ecdf in this