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From |
Yu Xue <snowrain@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Questions for random data generation and value label |

Date |
Wed, 13 Mar 2013 18:50:55 -0500 |

This is what I got after running 'jnsn': ************************************************************************************************** jnsn seq_num Mean and moments for seq_num Mean=3.049 Variance=1.668 Skewness=0.613 Kurtosis=2.995 Johnson distribution type: SB gamma=1.253 delta=1.388 xi=0.234 lambda=9.151 Note: program terminated successfully ajv , distribution(`r(seq_num1)') generate(fake_mpg) lambda(`r(lambda)')xi(`r(xi)') gamma(`r(gamma)') delta(`r(delta)') sum seq_num Variable | Obs Mean Std.Dev. Min Max ------------------------------------------------------------------------------------------------- seq_num 87469 3.049019 1.291566 1.000013 9.490211 sum seq_num1 Variable | Obs Mean Std.Dev. Min Max ------------------------------------------------------------------------------------------------- seq_num1 87469 3.045258 1.290069 .3887532 8.484454 ******************************************************************************************************* Min in "seq_num" and "seq_num1" are very different, which is what I called "not accurate" before. To Maarten: I may be confused with some statistical theories and terms in order for you to answer my question, if so, sorry about that. I found some useful information before on this website: http://galton.uchicago.edu/~collins/resources/stata/stata-commands.html, which shows how to generate random data with some specific parameters without mentioning the type of distribution. But I know that it is simpler than the random data that I want to create, please see below about what I learned from that website: Generate n uniform random variables (equal chance of all outcomes between a and b): gen vname=a + (b - a)*uniform() Generate normal data with mean mu and standard deviation sigma: gen vname= mu + sigma * invnorm(uniform()) What I want to generate is similar like that but with all specific a, b, mu, and sigma considered no mater what kind of distribution is. If I have to specify the type of distribution in order for you to answer my question, I will specify a normal distribution. Thank you all very much for your answers! Mark * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Questions for random data generation and value label***From:*Maarten Buis <maartenlbuis@gmail.com>

**References**:**st: Questions for random data generation and value label***From:*Yu Xue <snowrain@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Maarten Buis <maartenlbuis@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Yu Xue <snowrain@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Maarten Buis <maartenlbuis@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Yu Xue <snowrain@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Joerg Luedicke <joerg.luedicke@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Yu Xue <snowrain@gmail.com>

**Re: st: Questions for random data generation and value label***From:*"Joseph Coveney" <stajc2@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Yu Xue <snowrain@gmail.com>

**Re: st: Questions for random data generation and value label***From:*Maarten Buis <maartenlbuis@gmail.com>

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