Displaying 13 results from an estimated 13 matches for "jumlong".
2010 Nov 06
4
calculate probability
Dear All
I have 2 value assume 2.4 and 2.9 and mean = 2 variance = with n = 10
I want to find probability = 2.4 and 2.9.
How I can do this.
Many Thanks.
Jumlong
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Nov 08
2
conditional probability
Dear all
I have problem with calculate probability, I have data x1,...,x10,
I want to calculate probability x11 given x1,...,x10 with two conditions.
1. x is normal
2. unknow distribution
How I can do this.
Many Thanks.
Jumlong
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Oct 05
2
Sampling from data set
Dear all.
I have data with 2 variable x,y size 10000.
I want to sampling from this data with size 100.
How I can do it.
THANK.
--
Jumlong Vongprasert
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Oct 15
4
split data with missing data condition
...2.6763249
[10,] 68.87422 1.9697770
[11,] 19.00898 2.0584415
[12,] 60.27915 2.5365194
[13,] 50.76850 2.3943836
[14,] NA 2.2862790
[15,] 39.01229 1.7924957
and I want to spit data into two set of data, data set of nonmising and
data set of missing.
How I can do this.
Many Thanks.
Jumlong
--
Jumlong Vongprasert
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Oct 19
2
calculate power of test
Dear All
I want to calculate power of test. I want to test H0: Rho = 0 VS H1: Rho
!= 0.
Assume, I have r=0.2 and sample size = 100.
How I can do this.
Many Thanks
Jumlong
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Oct 12
1
Create DataSet with MCAR type
Dear all
I want to create dataset with MCAR type from my dataset.
I have my dataset with 100 records, and I want to create dataset from this
dataset to missing 5 records.
How I can do it.
THX
Jumlong
--
Jumlong Vongprasert
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Oct 20
1
remove unused variable and data
...t; "row.delete"
[19] "sample.x" "sample.x.y" "sample.y"
[22] "variance.100.3.5" "x.xbar.2"
>
and I want to delete theme all, but do not remove "poprho.3".
How I can do this.
Many Thanks
Jumlong
--
Jumlong Vongprasert Assist. Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
2010 Oct 15
1
Impute missing data by regression in R
Dear all
I have data (x,y) with data x is missing in 5 record of 100 record.
I want to impute data x by use regression.
How I can do this.
THX
Jumlong
--
Jumlong Vongprasert Assist. Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
2010 Nov 12
1
calculate variance with trimm mean
Dear All
I have problem about calculte variance use R.
I use trimm mean by mean(x, trim=.05) and I want to calculate variance
with trimm=.05.
How I can do this.
Many Thanks.
Jumlong
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2011 Jan 23
2
Problem with combined two data frame.
...ond data frame
GPAX THAI MATH SCINCE SOCIAL HEALT ART CAREER LANGUAGE
156 NA 3.38 2.78 3.01 3.49 3.83 3.67 3.73 2.92
and y = 2.36
1. I want to replace NA with y in second data frame, how I can do.
2. I want to combined first and second data frame, how I can do.
Many Thanks
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2011 Sep 04
1
Test for Random Walk and Makov Process
Dear All
I want to test my data for Random Walk or Markov Process.
How I can do this.
Many Thanks
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2010 Oct 16
1
Error in eval(expr, envir, enclos) : object 'x' not found
....04061 2.3596178
> predict(lm(x~y),IWJR.complete)
Error in eval(expr, envir, enclos) : object 'x' not found
>
I'm trying to find answers to solve my problem, but I cann't found what I
want to solve the problem.
What do I have to do to solve this problem.
Thank you very much.
Jumlong
--
Jumlong Vongprasert
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]
2011 Sep 04
0
Markov Switching GARCH Package
Deal All
I want to use MSGARCH for my data.
What package I will used.
Many THanks
--
Jumlong Vongprasert Assist, Prof.
Institute of Research and Development
Ubon Ratchathani Rajabhat University
Ubon Ratchathani
THAILAND
34000
[[alternative HTML version deleted]]