Why does the AdWord scheduler go wrong?

Question

Google Ads

Wash AdWord sometimes, and maybe often very badly mistaken.
Here is an example - I asked the analyst according to the forecast of the number of requests "PHP courses" - the Moscow region, all languages ​​- and the edward gave the result - for February 2015 in total - 50 (i.e. 50 people) in Moscow are looking for this request.
Moscow has 10 million inhabitants and another 10 million cohabitants - and only 50 requests.
In my opinion, there is an error of tens, but rather hundreds of times, and maybe thousands ...
What do you say?
Interesting - what does the scheduler show for this request!?
If you share info, then improve your karma for anyone :)
Below is the correspondence with Google's technical support.
.....
Oleg 17:07
actual traffic differs from forecasts and so on.
Me 17:02
OK. I will ask differently. What can be the maximum error of the estimate in percent?
if we talk about a specific query "php Courses" in the Moscow region...
Oleg 17:07
There is no such information.
I am 17:09
good. what is the max. error can be in the general case?
Oleg 17:12
Look, there is no percentage of error, as indicated in the article "...the estimate will be very approximate..." If you are going to make a business calculation for your company, I do not advise you to use this data.
I 17:14
ie this information about the error is secret?
Oleg 17:23
Nothing secret :) It's just that we don't have such information, I would be happy to tell you, the scheduler algorithm was set up as it was set up, it does not take into account the CCM and other things.
Therefore, yes, the forecast may not correspond to reality.
How much exactly? We don't know because no one has done it.
It is clear that if you add the keyword "PHP rates" in broad accordance with targeting Moscow, then there will be much more than 50 requests, perhaps the system takes into account just such a request, it is written that way, because if you look at approximate forecasts, the number is much higher.
For an accurate forecast, create a campaign, let it work for at least a month or two, then look at Google analytics and there will be accurate information on which you can sum up and make predictions.

Answer 1

I also have 50. Only in vain are you surprised. Google's planner shows exact match numbers, Yandex, by the way, phrase match with the same settings - 77. So everything beats.
People don't need PHP courses, they need PHP lessons, but it's better to download yes torrent yes online yes for free.