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Is your mean increasing or decreasing?

See attached data file.

Continue to collect data for five days. Is your mean increasing or decreasing?

5 days of data:

12/27/2011 10:17 PM 3475254662 11 INCOMING
12/27/2011 09:44 PM 8185194770 26 AGOURA
12/27/2011 09:17 PM 3475254662 22 INCOMING
12/27/2011 08:55 PM 3475254662 22 NWYRCYZN07
12/27/2011 06:31 PM 3475254662 3 NWYRCYZN07
12/27/2011 01:52 PM 9173989705 1 INCOMING
12/27/2011 10:04 AM 8883304182 1 INCOMING
12/25/2011 11:41 PM 0000000086 1 VOICE MAIL
12/25/2011 09:10 PM 7734312968 90 CHICGOZN03
12/25/2011 09:02 PM 7732850282 8 CHICAGO
12/25/2011 09:02 PM 7734312968 1 CHICGOZN03
12/25/2011 08:54 PM 7734312968 7 CHICGOZN03
12/25/2011 08:35 PM 7736204445 19 CHICGOZN03
12/25/2011 08:30 PM 7734263588 4 CHICAGO
12/25/2011 06:31 PM 3477874095 1 BROOKLYN
12/25/2011 09:12 AM 7737855992 2 CHICAGO
12/24/2011 10:48 AM 3129078888 3 CHICAGO
12/23/2011 04:57 PM 7185302041 1 INCOMING
12/23/2011 02:20 PM 2708850875 1 INCOMING
12/23/2011 02:19 PM 0000000086 2 VOICE MAIL
12/23/2011 12:06 PM 7734263588 10 CHICAGO
12/23/2011 11:45 AM 4046396500 1 ATLANTA
12/23/2011 11:13 AM 9999999999 1 0002612783

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Solution Summary

Is your mean increasing or decreasing?

$2.19