Hi. I have a line chart with a series of percentages in N14 through N65.
There is one point for each week of 52 weeks of the year.

In cell N7 I have the running average for Q1.
In cell N8 I have the running average for Q2.
In Cell N9 I have the running average for Q3.
In Cell N10 I have the running avergage for Q4.

I would like to chart another line that shows the quarterly average. 13
values of N7, followed by 13 values of N8; then N9, then N10.

Is there a way to do this other than adding another column that contains
these values?

Thanks,
Mike.