Argument "Attendance" isn't numeric in array or hash lookup at script.pl line 36, <DATA> line 1.
Argument "Sales" isn't numeric in array or hash lookup at script.pl line 36, <DATA> line 1.
Argument "Tickets" isn't numeric in array or hash lookup at script.pl line 36, <DATA> line 1.
Argument "Fans" isn't numeric in array or hash lookup at script.pl line 36, <DATA> line 1.

##</code><code>##

#!/usr/bin/env perl
use strict;
use warnings;
use Data::Dumper;

my @report_name = qw(Attendance Sales Tickets Fans);

while (<DATA>) {

        my %by_report = split ' ';
        print Dumper(\%by_report);
        for (@report_name) {
        print "report_name is: $_\n";
                if ( exists ($by_report{$_} ) ) {
                print "$_ Report is: $by_report{$_}\n";
                } else {
                print "No data for $_ Report\n";
                }
        }
}
__DATA__
Attendance 7424 Sales 7074 Tickets 350 Fans 109
Attendance 321541 Sales 321508 Tickets 31 Fans 101
Attendance 9208 Sales 9208 Fans 102
Attendance 9832 Sales 9829 Tickets 3 Fans 106
Attendance 1559058 Sales 1503174 Tickets 55404 Fans 104