Changing Average - Ongoing for Excel 2007

[goodwill-granny]

I am hoping someone knows a formula to help me.

I enter the info in column C each week. D is the average over 5 days,
and E is the percentage of the goal (1392/day) per week. I would
like the total at the bottom of D to automatically change without
having to go to the total of D and change the divisor. (In this example,
the divisor of the total of the numbers in D is 6. When I input the
numbers for 2/13/10, I will have to change the divisor to 7.)

After 13 weeks I will have 13 rows of data, with the average for each
column. I do this by quarter to eventually have the average over 52
weeks.

I need to have the average recalculated each week.

Is there a formula I can use that will update the average each week
when I input new data?

A B C D
E
Date Daily# Wkly actual Actual daily
Average

1) 1/2/2010 1392 6,037 1207.40 86.74%
2) 1/9/2010 1392 5,918 1183.60 85.03%
3) 1/16/2010 1392 6,022 1204.40 86.52%
4) 1/23/2010 1392 7,065 1413.00 101.51%
5) 1/30/2010 1392 6,096 1219.20 87.59%
6) 2/5/2010 1392 6,885 1377.00 98.92%
7) 2/13/2010 1392 0.00 0.00%
8) 2/20/2010 1392 0.00 0.00%
9) 2/27/2010 1392 0.00 0.00%
10) 3/6/2010 1392 0.00 0.00%
11) 3/13/2010 1392 0.00 0.00%
12) 3/20/2010 1392 0.00 0.00%
13) 3/27/2010 1392 0.00 0.00%

AVERAGE: 1392 6,227.60 1245.52 89.48%

Thank you.

 

[Herbert Seidenberg]

Excel 2007 PivotTable
All new layout.
http://www.mediafire.com/file/gjktwymty4t/02_09_10a.xlsx

 

[goodwill-granny]

Thank you very much!