Re: [R] Simulative data production

[Merve Şahin]

Thanks for your answer and attention :) I will try to do it
Merve

*Arş.Gör.Merve ŞAHİN*
*Abant İzzet Baysal Üniversitesi*
*Eğitim Bilimleri Bölümü*
*Ölçme ve Değerlendirme A.B.D.*


2014-04-30 15:57 GMT+03:00 Lorenz, David <lor...@usgs.gov>:

> Merve,
>   I'm not 100 percent sure I understand everything that you want. But
> start with the simulated likert scale data. The code that you have is not
> very efficient and it has at least one typo. I do not know if columns or
> rows represent the persons, so I'll set up as NROW and NCOL.
>   An efficient way to generate multiple columns of the same distribution
> is to generate all of the the random number and just make them a matrix.
> Example code below.
>
> NROW <- 20
> NCOL <- 4
> MAT <- matrix(sample(1:5, NROW*NCOL), ncol=NCOL)
>
>   Random normal deviates are typically generated from the rnorm function.
> But you stated you wanted to generate the normal distribution from total
> scores. I'm a bit confused because you refer to 200 people but that does
> not correspond to any number in the data that you have generated.
>   Hope this helps.
> Dave
>
> Date: Tue, 29 Apr 2014 09:38:52 +0300
>> From: Merve ?ahin <sahinm...@gmail.com>
>> To: r-help@r-project.org
>> Subject: [R] Simulative data production
>> Message-ID:
>>         <CAGSOz1uX4XUBoOV=WSd1gSuxKX+17Zv==Y7=
>> 3hhswa7tn6a...@mail.gmail.com>
>> Content-Type: text/plain
>>
>> Hello,
>> My name is Merve from Abant Ä°zzt Baysal University. I want to produce
>>
>> simulative data using R, but I couldn't do. I want to produce n=200, 5
>> likert type, 20 items and normally distributed data. The normal
>> distribution is provided by total scores of each of 200 person. I produce
>> this kind of data;
>> veri.seti<as.data.frame(cbind(sample(1:5,25,replace=T),sample(1:5,25,rep
>> lace=T),sample(1:5,25,replace=T),sample(1:5,25,replace=T))))
>> V1 V2 V3 V4
>> 1   4  1  5  1 <callto:1 4 1 5 1>
>> 2   2  4  2  2 <callto:2 2 4 2 2>
>> 3   5  5  1  4 <callto:3 5 5 1 4>
>> 4   4  5  3  4 <callto:4 4 5 3 4>
>> 5   3  2  3  1 <callto:5 3 2 3 1>
>> 6   3  1  2  1 <callto:6 3 1 2 1>
>> 7   1  3  5  4 <callto:7 1 3 5 4>
>> 8   2  4  1  1 <callto:8 2 4 1 1>
>> 9   3  1  5  4 <callto:9 3 1 5 4>
>> 10  4  5  4  5 <callto:10 4 5 4 5>
>> 11  2  1  4  5 <callto:11 2 1 4 5>
>> 12  2  3  1  5 <callto:12 2 3 1 5>
>> 13  1  4  2  4 <callto:13 1 4 2 4>
>> 14  1  1  1  4 <callto:14 1 1 1 4>
>> 15  4  3  4  1 <callto:15 4 3 4 1>
>> 16  2  2  5  2 <callto:16 2 2 5 2>
>> 17  4  4  1  4 <callto:17 4 4 1 4>
>> 18  5  5  2  4 <callto:18 5 5 2 4>
>> 19  4  2  1  3 <callto:19 4 2 1 3>
>> 20  3  5  3  2 <callto:20 3 5 3 2>
>> 21  2  4  4  4 <callto:21 2 4 4 4>
>> 22  4  3  4  4 <callto:22 4 3 4 4>
>> 23  5  1  5  2 <callto:23 5 1 5 2>
>> 24  4  2  2  2 <callto:24 4 2 2 2>
>> 25  2  2  1  3 <callto:25 2 2 1 3>
>>
>> But, I cannot check or provide the normal distribution. Also, I want to
>> add
>> this data on SPSS 20.0, How can I do this. Can you help me, please?
>>
>> *Arş.Gör.Merve ŞAHİN*
>> *Abant İzzet Baysal Üniversitesi*
>> *Eğitim Bilimleri Bölümü*
>> *Ölçme ve Değerlendirme A.B.D.*
>>
>>         [[alternative HTML version deleted]]
>>
>>
>>

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