## Internet Resources by Chapter

### Chapter 1

Random.Org (p. 4)

### Chapter 2

G*Power (p. 13)

ANOVA-Power and Sample Size (p. 24)

SAS Macro Programs: csmpower (p. 34)

### Chapter 3

This page contains two calculators. This page contains calculators for the normal distribution. These calculators can be used instead of a table of the normal distribution. (p. 44)

PSY calculate confidence intervals around contrasts (p. 49)

Calculate confidence intervals around rho (p. 49)

R2 manual [pdf] (p. 51)

Statsoft (Statistica) (p. 54)

### Chapter 4

Random Number Generator (p. 63)

The following syntax generates 2,000 cases with three normally distributed variables:

set seed = 200409281.
input program.
loop #i = 1 to 2000.
compute x_normal = rv.normal(50,15).
compute y_normal = rv.normal(25,7).
compute z_normal = rv.normal(5,2).
end case.
end loop.
end file.
end input program.
formats x_normal (f8.4).
execute.
descriptives variables = x_normal y_normal z_normal /statistics = all.

The SPSS syntax file for example on pp. 64-65 is as follows:

DEFINE repsamp ().
!DO !doover = 1 !TO 40.
USE ALL.
do if \$casenum = 1.
compute #s_\$_1=40.
compute #s_\$_2=1000.
end if.
do if #s_\$_2 > 0.
compute filter_\$ = uniform(1)* #s_\$_2 < #s_\$_1.
compute #s_\$_1 = #s_\$_1"filter_\$.
compute #s_\$_2 = #s_\$_2"1.
else.
compute filter_\$ = 0.
end if.
VARIABLE LABEL filter_\$ "10 from the first 1000 cases (SAMPLE)."
FORMAT filter_\$ (f1.0).
FILTER BY filter_\$.
T-TEST
GROUPS = group(1 0)
/MISSING = ANALYSIS
/VARIABLES = posttest
/CRITERIA = CI(.95) .
!DOEND.
!ENDDEFINE.
repsamp.
execute.

* Line 2 directs SPSS to draw 40 samples
*Line 5 directs SPSS to dr aw samples of N = 40
*Line 6 defines the number of cases in the sample as 1,000.

### Chapter 5

There are no www resources listed in this chapter.

### Chapter 6

G*Power Users Manual (p. 78)

### Appendix

Various statistical programs (p. 144)

OPtimal Design Software Manual (p. 145)

G*Power (p. 145)

Power and Precision software (p. 146)

Statistica Power Analysis Module (p. 146)

PASS-Power and Sample Size (p. 146)

Stata (p. 146)

SAS (p. 146)

SPSS (p. 146)

S-PLUS (p. 146)

Statistica (p. 146)

Web-based sample size calculator (p. 147)

Web-based sample size calculator for a variety of statistical tests (p. 147)

Web-base sample size calculators (p. 147)

### Additional World Wide Web Resources (Not Referenced in the Text)

Calculator for confidence intervals for odds ratio unmatched case control study

Comparing Single Proportion to Known Population

Computer Software for Power Analysis in Covariance Structure Modeling

Distribution Density Calculators, Plotters and RNG's

Calculate sample size necessary to detect the difference between two proportions

Various web-based statistical tools

Free Statistics Calculators

Free Web Development Resources

Free Web Development Resources - Overview of the Web Color Model

GraphPad QuickCalcs Confidence interval of a SD

Interactive Statistical Calculation Pages

Interactive Statistical Calculation Pages2

Interactive Statistical Calculation Pages

JavaStat"Retrospective Power Calculations

Martindale's Calculators On-Line Center

Martindale's Calculators On-Line Center Statistics - Courses

MathPages

MetaCalcPage

Noncentral Student CDF Calculator

Power Analysis for ANOVA Designs

Power Slates in HyperCourseware

Power and Sample Size Calculation for Logistic Regression with Binary Covariate(s)

Sample Size Calculations for Logistic Regression with Exposure Measurement Error

Sample size calculator

Sample Size Calculator by Raosoft, Inc.

Sample Size for Controlled Trials

Sample Size Calculator

Section of Medical Statistics

Statistical Applets

Statistical Calculators

The Ideas Behind Statistical Power

Java applet that demonstrates features of ANOVA

Data Generator is a free, open source script written in JavaScript, PHP and MySQL that lets you generatecustom data in a variety of formats.

Factorial Calculator

Calculate combinations and permutations

Sort Text

Sort Numbers

Sort References

Raynald's SPSS Tools contains 675 plus examples of syntax, macros, and scripts