Measuring the effectiveness of the various forms of content is no ones business but yours. Regardless if you have a blog or you’re working as a content marketer for a company, you should clearly define WHAT you want to achieve with your content and HOW are you going to do that. Only after that you will be able to apply CRO hacks and to enjoy results.
Your goals are the engine that will drive all of the efforts, so take the time to make sure that the WHAT component has a clear definition in your mind. As far as the HOW part is concerned, expect a vigorous measurement of your actions if you’re going for the big fish.