# summary: Summary statistics for paired samples In PairedData: Paired Data Analysis

## Description

Classical and robust statistics (location, scale and correlation) for paired samples.

## Usage

 ```1 2``` ```## S4 method for signature 'paired' summary(object,tr=0.2) ```

## Arguments

 `object` an object of class paired. `tr` percenatge of trimming.

## Value

A list with a first table corresponding to location and scale statistics and a second table to Pearson and winsorized correlation.

The first table contains four rows corresponding to calculations for x, y, x-y and (x+y)/2 variables. The location and scale statistics are given in columns.

 `n` sample size. `mean` mean. `median` median. `trim` trimmed mean (tr=0.2) `sd` standard deviation. `IQR` interquartile range (standardised to be consistent with the sd in the normal case) `median ad` median of absolute deviations (standardised) `mean ad` mean of absolute deviations (standardised) `sd(w)` winsorised standard deviation (tr=0.2 and standardised) `min` minimum value. `max` maximum value.

## Author(s)

Stephane CHAMPELY

## Examples

 ```1 2 3 4 5``` ```z<-rnorm(20) x<-rnorm(20)+z y<-rnorm(20)+z+1 p<-paired(x,y) summary(p) ```

### Example output

```Loading required package: MASS

Attaching package: 'PairedData'

The following object is masked from 'package:base':

summary

\$stat
n       mean     median       trim       sd   IQR (*) median ad (*)
x (x)   20 -0.2605300 -0.1304759 -0.1656371 1.335601 1.2839514     1.2606183
y (y)   20  0.9433965  1.0013114  0.9788450 1.667414 1.5020554     1.5569226
x-y     20 -1.2039265 -1.5799088 -1.3329284 1.413046 1.5370552     1.3480841
(x+y)/2 20  0.3414332  0.2355220  0.3213359 1.335243 0.8970679     0.8527932
mean ad (*)     sd(w)       min      max
x (x)      1.388289 1.3652740 -2.840402 2.403948
y (y)      1.567083 1.4830515 -2.544897 4.636996
x-y        1.434678 1.4733941 -3.908782 1.161724
(x+y)/2    1.143892 0.8608821 -2.314829 3.520472

\$cor
cor      wcor
(x,y) 0.5764257 0.2634895
```

PairedData documentation built on May 1, 2019, 6:49 p.m.