How much is 0.38 divided by 36?

My account stats say it is 0.02

[dave741]

Date range August 27 - Sept 1.

I can see these numbers in the Ad Group level:
- Costs for one particular phrase $0.38
- 36 clicks for that phrase
- Avg. CPC - 0.02 (The real value is 0,01056)

But one level up I can see these numbers for whole adgroup:
- Costs $0.69
- 64 clicks
- Avg. CPC - 0.01 (The real value is 0,01078)

Do you understand this rounding?

[toddb]

Noticed the same thing.

[Sweezely]

Possibly someone else's ad rank changed during the period you were measuring, and while the average for the whole period may have been nearly 1c, the last two clicks came in at 2c, so it's reporting that figure?

Or possibly some of those clicks were identified as fraud and you were never charged for them?