"Random guesses" refers to making choices or predictions without any basis or logical reasoning. It means choosing or guessing something without any information or evidence to support it. Full definition
By combining data from nine of the actors, the system could identify which feeling the 10th was experiencing, well above random guessing. (discovermagazine.com)
So who gives a damn if a computer is better at making random guesses than a person is? (thenextweb.com)
Ms. Ravitch shows that claims of improving scores on state tests have actually been produced mainly by ever - lower test score requirements, so low in one instance that many students could get to an acceptable level by random guessing. (nytimes.com)