Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library: stats
See also: summarize mean var min max quantile kurtosis skewness

Quantlet: descriptive
Description: descriptive provides extensive descriptive statistics for the columns of a data matrix. An additional vector of name strings can be given to identify columns by names.

Usage: desc=descriptive(x{,xvars})
Input:
x n x p matrix, the columns correspond to the variables. (x may contain NaN, Inf or -Inf.)
xvars optional, p x 1 string vector, variable names.
Output:
desc string output, containing table of descriptive statistics.

Example:

library("stats")

setenv("outputstringformat", "%s")  

x=read("bank2")

xvars="length"|"l_height"|"r_height"|"u_frame"|"l_frame"|"diagonal"

descriptive(x,xvars)

Result:

descriptive statistics for all six variables, as e.g. for length:

[  1,]   

[  2,] ========================================================= 

[  3,]  Variable length 

[  4,] ========================================================= 

[  5,]   

[  6,]  Mean              214.896 

[  7,]  Std.Error        0.376554     Variance         0.141793 

[  8,]   

[  9,]  Minimum             213.8     Maximum             216.3 

[ 10,]  Range                 2.5 

[ 11,]   

[ 12,]  Lowest cases                  Highest cases  

[ 13,]          71:         213.8               6:        215.7 

[ 14,]          40:         213.9              24:        215.7 

[ 15,]         171:         213.9              57:        215.7 

[ 16,]          76:         214.1              35:        215.9 

[ 17,]         172:         214.2             167:        216.3 

[ 18,]   

[ 19,]  Median              214.9 

[ 20,]  25% Quartile        214.6     75% Quartile        215.1 

[ 21,]   

[ 22,]  Skewness         0.187724     Kurtosis         0.712654 

[ 23,]   

[ 24,]  Observations                    200 

[ 25,]  Distinct observations            21 

[ 26,]   

[ 27,]  Total number of {-Inf,Inf,NaN}    0 

[ 28,]   

[ 29,] ========================================================= 

[ 30,] 


Library: stats
See also: summarize mean var min max quantile kurtosis skewness

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Author: Marlene Mueller, 970903
(C) MD*TECH Method and Data Technologies, 21.9.2000