Specialized Services...
...for marketers, advertisers, and businesses
Select Your Consultant /
Consultant Bios
Free Estimate
To request a FREE quote, please CUT AND PASTE the questions below and answer in an e-mail to:
2011@helpwithstatistics.com
Alternates (not hyperlinked):
2011stats @ Gmail.com
Help @ DissertationAdvising.com
***
(01) Your name:
(02) E-mail address:
(03) Day/evening phone numbers (* Required -- in case the response to your e-mail bounces or the editors need clarification regarding the scope of service needed, deadline, etc.):
(04) City, State, Country (or time zone):
(05) Provide a short description of your project and your consulting needs (e.g., data analysis, report writing, charts/graphs, software tutoring):
(06) Are you using a particular brand of statistical software (e.g., SPSS, SAS, JMP, Excel, MatLab)?
(07) What is your academic department / research topic ?
(08) When is your final deadline?
(09) Would you want your consultant to produce tables/graphs/charts?
(10) Would you want your consultant to produce a results narrative?
(11) The name(s) of the statistician(s) you'd like to contact (optional):
(12) How did you learn about our service?:
***
Attach relevant files/documents: (e.g., spreadsheets, university guidelines, SPSS file, proposal, questionnaire, etc.
Please zip large files)
Once your e-mail is received, the network coordinator will forward it (plus any attached files) to the consultant(s) you have selected. If you have not selected consultants, your e-mail will be sent to several consultant(s) chosen by the network coordinator.
If you sent a submission during U.S. business hours and do not get responses within 3 hours, please page the webmaster, and/or resend your submission to the alternate e-mail addresses, and/or leave voicemail for the webmaster: 469-789-3030.
The webmaster cannot quote prices for the freelance statisticians associated with this network. The statistician(s) will contact you directly after receiving your submission and will answer your questions regarding services offered, price, and turnaround time.
Associated Consulting Networks
Thesis and Dissertation Advisors On Call
Technical, Medical, Business, Legal, Education, and Scientific Writing
Thesis and Dissertation Editing
Webmaster
Note: The webmaster assures that your
submissions receive a response. The webmaster is not a statistician and cannot
answer statistics questions. Please submit a request
for service to receive a response from a member of our statisticians
network.
|
|||
| site search by freefind |
What’s New in Stata 12?
Just about every two years StataCorp releases their latest version of their statistical software package, Stata. However, the newest release is sure to attract many more users to the tools that Stata offers to its users for several reasons.
The developers of StataCorp have been working hard to increase the intelligence of the program itself. For example, the – set memory – command will effectively be obsolete in the new release. The “Automatic Memory Management” component of Stata 12 is designed to detect the amount of RAM needed to analyze the data and will adjust the amount of RAM used to match this need. This is particularly helpful if you need to merge several datasets together, since the software will adjust memory allocation for you. They have also worked to redesign the user interface of the program. One of the best features of this is the new layout of the viewer (where you read help files, find user written packages, etc.). With a new table of contents drop down menu, you can get to the parts of the help file that you need and navigate through lengthy help files much easier than before. For example, try running – help estout – (estout can be installed from SSC if you do not have it already) and imagine how convenient it would be to have a drop down menu to navigate that help file.
There have also been a significant amount of modifications and additions made to the econometric and time-series models in Stata 12. ARFIMA, Multivariate GARCH, spectral density, and several other estimation features have been added to the new release. In addition to developing support for these time-series models, the developers have also created what they call “Time-Series Filters.” These filters allow you to have more flexibility, with greater ease, to specify how time functions within your model. For example, these new filters are able to split time-series data into cyclical and trend components. This can make estimating time-series models much more stable and precise.
A combination of new and improved visual routines adds to the capabilities to Stata 12. Now it is possible to produce contour plots that are often used to show results of geospatial analysis. Other new graphical components include enhanced ROC curve analysis and modeling, contrast plots, and margins plots.
However, the most impressive aspect of the new release, Stata 12, is the addition of Structural Equation Modeling (SEM) capabilities. If you’re like me, you use Stata all the time and then have to abandon your work there to use another statistical package (like LISREL, EQS, M-Plus, Amos, etc.) to fit SEM to your data. While it would have great to have the command line interface to run these models, Stata 12 now has a Graphical User Interface (GUI) to allow you to interactively create a graphical model that Stata can interpret and test for you.
Stata 12 is a great platform for allowing you to fit an amazing array of statistical models to your data. And even though the development efforts of StataCorp are making this software platform an amazing asset, it is also necessary to remind you that end-users of Stata’s products are also hard at work developing and refining statistical procedures that may be of interest to you. For example, Maurizio Pisati (a professor of sociology and social research in Italy) wrote a routine called – spmap – that can be used to show results of your analysis on a map. In my own research, I examined the effect of the availability of community-based resources on student achievement. Using the routine created by Dr. Pisati, I am able to display these results in a way that is ease to interpret for a wide variety of audiences.
All pages copyright 2012
www.HelpWithStatistics.com
Last updated January 21, 2012
