FR
EN
ES
Descriptive Statistics:
Location and Dispersion Parameters.
One variable
Mean & Co
Median & Co
Quartiles
Deciles
Percentiles
Class counts
One variable by group
Descriptive Statistics:
Tables or Charts / Uni- or Bivariate
Univariate
Histogram (counts)
Histogram (percentages)
Bar chart
Pie chart
Box plot
Table of counts and percentages
Cumulative frequency table
Bivariate
Contingency table (counts)
Contingency table (total %)
Contingency table (row %)
Contingency table (column %)
Double projection plot (rows)
Double projection plot (points)
Split histogram (counts)
Split box plot
Analytical Statistics: Tests
One quantitative: observed vs theoretical
H0: µ0=
Confidence
%
Alternative hypothesis: µ
≠
>
<
µ0
One quantitative vs one qualitative
One qualitative: equiprobability
Two observed qualitative
Two quantitative - no causality
Alternative hypothesis: rhô
≠
>
<
rhô_0
Two quantitative - with causality
Associations and Diagnosis
Survival analysis
One group
Two groups
Anova
One group
Two groups
Data
Use this "test" dataset, fill it in
then import it below.
Variables
Recode-Cut
Number of classes:
New variable:
Replace existing variable
New variable:
Replace existing variable
Database
Required sample size
Compare 2 binomial proportions
6 parameters already filled in for the example:
1-Comparison type:
2 observed
theoretical vs observed
2-π1 or theo=
[0 - 1]
3-π2 or obs=
[0 - 1]
4-Alpha risk
%
5-Power (1- Beta)
%
6-Approach:
Two-sided
One-sided
Compare 2 observed means
5 parameters already filled in for the example:
1-Delta =
diff (mean 1 - mean 2)
2-Common standard deviation =
3-Alpha risk
%
4-Power (1- Beta)
%
5-Approach:
Two-sided
One-sided
Case-control study - OR
6 parameters already filled in for the example:
1-Odds Ratio =
2-Expected percentage =
of exposed controls
3-Number of controls per case =
(1 to 10), 4 is a good compromise
4-Alpha risk
%
5-Power (1- Beta)
%
6-Approach:
Two-sided
One-sided
Options
Decimal precision:
Session
Show history
> Welcome! Start by importing data
> Welcome! Start by importing data
> Calculations are running, please wait...
How to use
| Version R4Web 4.5.2.2026.02 |
About
Session ID: cac1f677a60f03f5b7a11673cc1de6ff
