I have a script that checks how many lines are added per second, and the total number of lines. I want to be able to have the data of $line_count , be stored temporary every 10 changes or intervals, then have all the numbers averaged.. i myself have NO clue how to do this.. any math wiz's out there help me out.. the code is below. 
#!/bin/perl
use Term::ANSIColor;
use Term::ANSIColor 2.00 qw(:pushpop);
use File::Tail;

my $file=File::Tail->new("output.txt");
my $last_time = time();
my $line_count = 0;
while (defined($line=$file->read )){
   if ( time() > $last_time ){
     $last_time = time();

open(FILE, "output.txt");
  @lines = <FILE>;
close(FILE);
$num = @lines;
        system 'clear';
print colored("Bots p/s: $line_count\n", "green");
print colored("Total Bots: $num\n", "green");
        print "   \n   \n   \n";
        print color 'reset';
     $line_count = 0;
   }
   $line_count++;
}

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In reply to Reading the average of a changing varible by Anonymous Monk

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