Using impression share when changing bids is extremely important and average position does not take impression share into account. Use the impression metric.
In order to endure, maintain the positive trend, and conquer your constantly changing goals, you must be prepared to try new things with your paid search efforts.
I have the perfect statistically-backed story to show why you need to be bidding on brand terms, and the revenue coming in on brand terms is not guaranteed revenue for your company without the Paid Search efforts.
There are many techniques advertisers can utilize for budgeting in Excel. The focus here is making sure budgeting is being done to accommodate the differences in the day of the week.
The video below explains the step-by-step on how to go about reporting in Excel. This process works if your account is structured in an organized manner at campaign level.