The graph is not the achievement
Marketing analytics is the process of measuring and interpreting marketing activity so you can understand what's working, what isn't and where to focus your efforts.
The important word there is interpreting.
Collecting data is the beginning, not the result.
A graph showing that your website attracted 12,000 visitors might be encouraging. But it doesn't tell you whether those visitors were interested in your business, found anything useful or took a meaningful next step.
Perhaps 11,000 arrived looking for a recipe for banana bread.
You sell accounting software.
Wonderful traffic. Slightly disappointing commercial prospects.
The point isn't that traffic, impressions, likes or clicks are worthless. They each tell you something.
The problem starts when businesses celebrate the number without understanding what it represents.
A useful marketing report should help you answer a question, identify an opportunity or make a decision.
Otherwise, it's essentially wall art with percentages.