Here's what's likely meant:
* Make an inference: This is the correct way to say it. It means to draw a conclusion based on evidence and reasoning, even if that evidence is not explicitly stated.
For example:
* You see someone walking out of a bakery with a bag of cookies. You might infer that they bought the cookies at the bakery.
* You hear someone crying. You might infer that they are sad or upset.
Let me know if you have a specific situation in mind and I can help clarify what's being meant!