Graphing confidence ellipses : An update of ellip for Stata 8
نویسنده
چکیده
This paper describes an update of the ellip command for graphing confidence ellipses in Stata 8. Two of the most notable new features are the option to graph confidence ellipses around variable means and the ability to add inscribed lines. These features allow a geometric characterization of linear regression with unequal error variances, as in McCartin (2003).
منابع مشابه
Speaking Stata: Graphing distributions
Graphing univariate distributions is central to both statistical graphics, in general, and Stata’s graphics, in particular. Now that Stata 8 is out, a review of official and user-written commands is timely. The emphasis here is on going beyond what is obviously and readily available, with pointers to minor and major trickery and various user-written commands. For plotting histogram-like display...
متن کاملSpeaking Stata: Graphing categorical and compositional data
Abstract. A variety of graphs have been devised for categorical and compositional data, ranging from widely familiar to more unusual displays. Both official Stata commands and user-written programs are available. After a stacking trick for binary responses is explained, bar charts and related displays for cross-tabulations are discussed in detail. Tips and tricks are introduced for plotting cum...
متن کاملConfidence intervals for kernel density estimation
This article describes asciker and bsciker, two programs that enrich the possibility for density analysis using Stata. asciker and bsciker compute asymptotic and bootstrap confidence intervals for kernel density estimation, respectively, based on the theory of kernel density confidence intervals estimation developed in Hall (1992b) and Horowitz (2001). asciker and bsciker allow several options ...
متن کاملUpdate on HCV genotypes among Iranian blood donors
Abstract Background and Objectives Hepatitis C (HCV) infection is one of the main causes of chronic hepatitis diseases all over the world. HCV is a transfusion transmitted virus and a serious threat to general health. HCV genotyping has an important role in tracing routes of infection. This study aimed at investigating the changes in distribution pattern of HCV genotypes among Iranian blood d...
متن کاملsbe36.1 Summary statistics for diagnostic tests
References Gleason, J. R. 1997. ip18: A command for randomly resampling a dataset. Stata Technical Bulletin 37: 17–22. Reprinted in Stata Technical Bulletin Reprints, vol. 7, pp. 77–83. ——. 1999. ip18.1: Update to resample. Stata Technical Bulletin 52: 9–10. Reprinted in Stata Technical Bulletin Reprints, vol. 9, p. 119. Weesie, J. 1997. dm46: Enhancement to the sample command. Stata Technical ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007