Excel program, averages in line

[bugmeso]

For years I have kept track of the house utilities as in average OD temp for the month, total monies spent per month with totals at the at the end of an Excel line, total KW or CFM per month. I also keep track of the amount of the cost for KW per month. WHAT I WOULD LIKE TO KNOW: is there a formula for making an average per month at the end of the 12 month basis. And average each month as entered each month. Now that we moved into an all electric house. Thanks