stats - Calcurate statistics of values in each column
stats [-v] [-t type[,type...]] [file...]This manual page documents stats. This program is for calcurating various statistics of values in each column. stats can compute several statistics: the number of values, sum, minimum, maximum, mean, variance, standard deviation, coefficient of variation, 25%/50%/75% quantiles, and 90%/95%/99% confidence interlvals. stats can also compute statistic for multiple data sets: covariance and correlation coefficient.
stats calcurates statistics of numbers in all lines, located at the same column position. For instance, if the input file has N colums, stats displays statistics for these N columns.
The input file format of stats is straightforward; each column is seperated by whitespace, and each value is any valid Perl number. See perlre(1) and perlnumber(1) for details of whitespace characters and valid number formats.
Display label for each statistic
Specify statistic to display. type must be one of the following keywordss.
count the number of values
sum sum
min minimum
max maximum
mean sample mean
median median
mode mode
var sample variance
stddev standard deviation
skew skewness
kurt kurtosis
cv coefficient of variation
quant10 10% quantile
quant25 25% quantile
quant50 50% quantile
quant75 75% quantile
quant90 90% quantile
conf90 90% confidence interval
conf95 95% confidence interval
conf99 99% confidence interval
covar covariance
corr correlation coefficient
spearmn Spearman's rank correlation
kendall Kendall's rank correlation
findex Jain's fairness index $ seq 10
1
2
3
4
5
6
7
8
9
10
$ seq 10 | stats -v
count 10
sum 55
min 1
max 10
mean 5.5
median 5
mode 6
var 8.25
stddev 2.87228
cv 52.2233
skew 0
kurt -1.22424
quant10 2
quant25 3
quant50 6
quant75 8
quant90 10
conf90 1.49415
conf95 1.78026
conf99 2.33977
findex 0.785714
$ seq 10 | stats -t mean
5.5000Also, you can specify list of statistics to display.
$ seq 1 10 | stats -t mean,var
5.5000
8.2500 $ seq 10 | column -c 16
1 6
2 7
3 8
4 9
5 10
$ seq 10 | column -c 16 | stats -v
count 5 5
sum 15 40
min 1 6
max 5 10
mean 3 8
median 3 8
mode 5 6
var 2 2
stddev 1.41421 1.41421
cv 47.1405 17.6777
skew 0 0
kurt -1.3 -1.3
quant10 1 6
quant25 2 7
quant50 3 8
quant75 4 9
quant90 5 10
conf90 1.04039 1.04039
conf95 1.23961 1.23961
conf99 1.62921 1.62921
findex 0.818182 0.969697
% cd /usr/src/linux/net/ipv4
% ls -l *.c
-rw-rw-r-- 1 root root 45818 Nov 2 09:05 af_inet.c
-rw-rw-r-- 1 root root 13814 Nov 2 09:05 ah4.c
-rw-rw-r-- 1 root root 35054 Nov 2 09:05 arp.c
-rw-rw-r-- 1 root root 64272 Nov 2 09:05 cipso_ipv4.c
-rw-rw-r-- 1 root root 3245 Nov 2 09:05 datagram.c
-rw-rw-r-- 1 root root 60368 Nov 2 09:05 devinet.c
-rw-rw-r-- 1 root root 17715 Nov 2 09:05 esp4.c
-rw-rw-r-- 1 root root 31111 Nov 2 09:05 fib_frontend.c
-rw-rw-r-- 1 root root 8404 Nov 2 09:05 fib_rules.c
-rw-rw-r-- 1 root root 37178 Nov 2 09:05 fib_semantics.c
-rw-rw-r-- 1 root root 65563 Nov 2 09:05 fib_trie.c
-rw-rw-r-- 1 root root 21349 Nov 2 09:05 fou.c
-rw-rw-r-- 1 root root 2909 Nov 2 09:05 gre_demux.c
-rw-rw-r-- 1 root root 6387 Nov 2 09:05 gre_offload.c
-rw-rw-r-- 1 root root 29472 Nov 2 09:05 icmp.c
-rw-rw-r-- 1 root root 72215 Nov 2 09:05 igmp.c
-rw-rw-r-- 1 root root 27977 Nov 2 09:05 inet_connection_sock.c
-rw-rw-r-- 1 root root 29166 Nov 2 09:05 inet_diag.c
-rw-rw-r-- 1 root root 10850 Nov 2 09:05 inet_fragment.c
-rw-rw-r-- 1 root root 16957 Nov 2 09:05 inet_hashtables.c
-rw-rw-r-- 1 root root 9482 Nov 2 09:05 inet_lro.c
-rw-rw-r-- 1 root root 9165 Nov 2 09:05 inet_timewait_sock.c
-rw-rw-r-- 1 root root 16266 Nov 2 09:05 inetpeer.c
-rw-rw-r-- 1 root root 3998 Nov 2 09:05 ip_forward.c
-rw-rw-r-- 1 root root 21583 Nov 2 09:05 ip_fragment.c
-rw-rw-r-- 1 root root 34240 Nov 2 09:05 ip_gre.c
-rw-rw-r-- 1 root root 13810 Nov 2 09:05 ip_input.c
-rw-rw-r-- 1 root root 15637 Nov 2 09:05 ip_options.c
-rw-rw-r-- 1 root root 40333 Nov 2 09:05 ip_output.c
-rw-rw-r-- 1 root root 35675 Nov 2 09:05 ip_sockglue.c
-rw-rw-r-- 1 root root 28418 Nov 2 09:05 ip_tunnel.c
-rw-rw-r-- 1 root root 11741 Nov 2 09:05 ip_tunnel_core.c
-rw-rw-r-- 1 root root 14330 Nov 2 09:05 ip_vti.c
-rw-rw-r-- 1 root root 4756 Nov 2 09:05 ipcomp.c
-rw-rw-r-- 1 root root 40057 Nov 2 09:05 ipconfig.c
-rw-rw-r-- 1 root root 15510 Nov 2 09:05 ipip.c
-rw-rw-r-- 1 root root 65328 Nov 2 09:05 ipmr.c
-rw-rw-r-- 1 root root 5302 Nov 2 09:05 netfilter.c
-rw-rw-r-- 1 root root 29801 Nov 2 09:05 ping.c
-rw-rw-r-- 1 root root 20748 Nov 2 09:05 proc.c
-rw-rw-r-- 1 root root 2339 Nov 2 09:05 protocol.c
-rw-rw-r-- 1 root root 25900 Nov 2 09:05 raw.c
-rw-rw-r-- 1 root root 69929 Nov 2 09:05 route.c
-rw-rw-r-- 1 root root 11639 Nov 2 09:05 syncookies.c
-rw-rw-r-- 1 root root 24418 Nov 2 09:05 sysctl_net_ipv4.c
-rw-rw-r-- 1 root root 84459 Nov 2 09:05 tcp.c
-rw-rw-r-- 1 root root 6349 Nov 2 09:05 tcp_bic.c
-rw-rw-r-- 1 root root 11399 Nov 2 09:05 tcp_cdg.c
-rw-rw-r-- 1 root root 10984 Nov 2 09:05 tcp_cong.c
-rw-rw-r-- 1 root root 15058 Nov 2 09:05 tcp_cubic.c
-rw-rw-r-- 1 root root 9674 Nov 2 09:05 tcp_dctcp.c
-rw-rw-r-- 1 root root 1969 Nov 2 09:05 tcp_diag.c
-rw-rw-r-- 1 root root 9302 Nov 2 09:05 tcp_fastopen.c
-rw-rw-r-- 1 root root 4966 Nov 2 09:05 tcp_highspeed.c
-rw-rw-r-- 1 root root 7565 Nov 2 09:05 tcp_htcp.c
-rw-rw-r-- 1 root root 4968 Nov 2 09:05 tcp_hybla.c
-rw-rw-r-- 1 root root 8350 Nov 2 09:05 tcp_illinois.c
-rw-rw-r-- 1 root root 181897 Nov 2 09:05 tcp_input.c
-rw-rw-r-- 1 root root 63388 Nov 2 09:05 tcp_ipv4.c
-rw-rw-r-- 1 root root 8900 Nov 2 09:05 tcp_lp.c
-rw-rw-r-- 1 root root 5661 Nov 2 09:05 tcp_memcontrol.c
-rw-rw-r-- 1 root root 31129 Nov 2 09:05 tcp_metrics.c
-rw-rw-r-- 1 root root 26301 Nov 2 09:05 tcp_minisocks.c
-rw-rw-r-- 1 root root 7777 Nov 2 09:05 tcp_offload.c
-rw-rw-r-- 1 root root 103411 Nov 2 09:05 tcp_output.c
-rw-rw-r-- 1 root root 7564 Nov 2 09:05 tcp_probe.c
-rw-rw-r-- 1 root root 1406 Nov 2 09:05 tcp_scalable.c
-rw-rw-r-- 1 root root 18837 Nov 2 09:05 tcp_timer.c
-rw-rw-r-- 1 root root 9805 Nov 2 09:05 tcp_vegas.c
-rw-rw-r-- 1 root root 5767 Nov 2 09:05 tcp_veno.c
-rw-rw-r-- 1 root root 8361 Nov 2 09:05 tcp_westwood.c
-rw-rw-r-- 1 root root 7041 Nov 2 09:05 tcp_yeah.c
-rw-rw-r-- 1 root root 4220 Nov 2 09:05 tunnel4.c
-rw-rw-r-- 1 root root 66396 Nov 2 09:05 udp.c
-rw-rw-r-- 1 root root 5633 Nov 2 09:05 udp_diag.c
-rw-rw-r-- 1 root root 11360 Nov 2 09:05 udp_offload.c
-rw-rw-r-- 1 root root 3189 Nov 2 09:05 udp_tunnel.c
-rw-rw-r-- 1 root root 3483 Nov 2 09:05 udplite.c
-rw-rw-r-- 1 root root 3975 Nov 2 09:05 xfrm4_input.c
-rw-rw-r-- 1 root root 3773 Nov 2 09:05 xfrm4_mode_beet.c
-rw-rw-r-- 1 root root 2135 Nov 2 09:05 xfrm4_mode_transport.c
-rw-rw-r-- 1 root root 3031 Nov 2 09:05 xfrm4_mode_tunnel.c
-rw-rw-r-- 1 root root 2592 Nov 2 09:05 xfrm4_output.c
-rw-rw-r-- 1 root root 7664 Nov 2 09:05 xfrm4_policy.c
-rw-rw-r-- 1 root root 6813 Nov 2 09:05 xfrm4_protocol.c
-rw-rw-r-- 1 root root 2494 Nov 2 09:05 xfrm4_state.c
-rw-rw-r-- 1 root root 2765 Nov 2 09:05 xfrm4_tunnel.c
% ls -l *.c | awk '{ print $5 }' | stats -v
count 87
sum 1.96204e+06
min 1406
max 181897
mean 22552.2
median 11399
mode 13810
var 7.60447e+08
stddev 27576.2
cv 122.277
skew 2.90083
kurt 11.6306
quant10 3031
quant25 5661
quant50 11399
quant75 29472
quant90 64272
conf90 4863.41
conf95 5794.7
conf99 7615.89
findex 0.400774
The latest version of stats is available at
http://www.lsnl.jp/~ohsaki/software/stats/stats
perl(1), perlnumber(1), perlre(1)
Hiroyuki Ohsaki <ohsaki[atmark]lsnl.jp>