# CTR?

## Recommended Posts

I'm sure this has been explained before...I just don't know where.

In Alamy Measures, what is the difference between total CTR and Average CTR?

Those numbers vary a lot between each other. Betty

##### Share on other sites

Last time I answered this I got it around the wrong way.

total CTR = (add all zooms for all pseudos together and divide by the sum of all the views from all the pseudos ) *100

average ctr is just the average from all your pseudos

##### Share on other sites

Thanks, John.

average ctr is just the average from all your pseudos

Average "what" from all your pseudos?  Isn't that the same as the first? Or is it simply views not zooms?

##### Share on other sites

I am just guessing.  Isn't Average CTR for a certain Alamy Mesure period?

##### Share on other sites

average ctr is the average of the ctrs of each pseudo ie, add them all and divide by the number of pseudos.

It's not the same as the total:

eg

pseudo A has 1000 views and 10 zooms ctr = (10/1000)*100=1

pseudo B has 5000 views and 5 zooms ctr=(5/5000)*100=0.1

pseudo C has 500 views and 10 zooms ctr=(10/500)*100=2

average CTR (for A,B and C) =(1+0.1+2)/3    = 1.03

total ctr (for A,B and C)=  (add all zooms/ add all views)*100=((10+5+10)/(1000+5000+500)(*100 = (25/6500)*100 = 0.38

##### Share on other sites

Wow, confusing.  Which one is the most important figure when evaluating one's portfolio?  I would think total.