What's New in the Interactive Statistical Pages
Online University -- A
site with a wide variety of academic-based articles that take an
insightful approach, igniting the educational curiosity in us all. Not
specifically a statistics site, but well worth looking at nonetheless! (added 03/27/2012)
VSUstat -- a free online
statistical analysis tool for basic experimental design. It can do
ANOVA and post-hoc analysis using Tukey's HSD and Fisher's LSD for
completely randomized designs (CRD), randomized complete block designs
(RCBD), Latin square designs, and two-factor factorial design for CRD
and RCBD. It can also calculate descriptive statistics (sum, mean,
range, min, max, standard deviation, variance, standard error mean,
skewness, standard error skewness, standard error kurtosis) and analyze
Student's t-test (one-sample t-test, independent-samples t-test,
paired-samples t-test). VSUstat can import, export, and save datasets,
access public datasets, and produce output in PDF, HTML, XLS, and RTF. (added 02/24/2012)
Added a link to a Ukrainian translation of my non-linear least squares curve-fitting page. (added 08/31/2011)
C Programming Tutorial -- A
set of short tutorial taking you through the process of creating C
programs, from the simplest "Hello World" application, to more complex
programs using variables and expressions, input and output,
if/then/else and while constructs, and arrays. (added 04/28/2011)
Kaplan-Meier Survival Plot (with 95% Conf.Intervals) and LogRank Test
-- Type or copy/paste data, or read it in from a file. Prepares
tables, graphs, and statistical comparison output. Can perform
stratified log-rank test. (added 02/10/2011)
Another very good Normal Distribution calculator, with nice graphics
Sample-size calculator for cluster randomized controlled trials,
which are used when the outcomes are not completely independent of each
other. This independence assumption is violated in cluster randomized
trials because subjects within any one cluster are more likely to
respond in a similar manner. A measure of this similarity is known as
the intra-correlation coefficient (ICC). Because of the lack of
independence, sample sizes have to be increased. This web site contains
two tools to aid the design of cluster trials – a database of ICCs and
a sample size calculator (along with instruction manuals). (added 07/08/2010)
Two websites by Jeremy Taylor, dedicated to helping graduate
students and professionals with their statistical analysis or problems. (added 07/03/2010)
- StatsMakeMeCry
is a place to share ideas and find answers to your statistical
questions. It is intended for information sharing, and focuses on free
content, such as blogs, video tutorials...etc.
- VaryYourStats
is dedicated to providing consultation to those seeking more in-depth
statistical assistance. It offers straight-forward statistical
consulting to students, researchers, and professionals from a variety
of disciplines. (It is not a dissertation writing service.)
Data Preparator -- handles
the "pre-processing" chores of getting a data file ready for
analysis... data cleaning, discretization, numeration, scaling,
attribute selection,
missing values, outliers, statistics, visualization, balancing,
sampling, row selection, and several other tasks, with a user-friendly
graphical interface. It's written in Java, and runs on Windows, Mac
OS/X, and Linux. The free demo has all features enabled, and will
handle up to 200 cases. (added 05/09/2010)
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