For RPM are you looking in Adsense or YT Analytics?
YouTube analytics. You have to calculate the RPM manually. But it's the only calculation of RPM that matters. It's the bottom line of how much a thousand views really earns. I never look at adsense numbers because they're never accurate.
In YouTube analytics:
1) Go to overview
2) Select the custom dates as 1st November 2014 - 31st November 2014
3) Note down the number below the "Your estimated revenue" graph (on the right)
4)Divide it by the number under the "views" graph (on the left)
5) multiply by 1000
November 2014 = $3.17
December 2014 = $3.64
I remember the period very well. On some days, it was even over $4 RPM. It really was the YouTube goldrush. *sigh*