"correctly guess" is a correct and usable phrase in written English.
You can use it to indicate when someone has made a guess that is accurate or has been proven to be true. For example: "The detective correctly guessed that the suspect was the one who committed the crime."
The notion that we can correctly guess who was and was not using steroids is laughable.
Once again, the subjects could not correctly guess the emotions by looking at facial expressions alone.
With five attempts, the team was able to correctly guess the pin 100% of the time.
We watch elephants spraying dust on themselves, and correctly guess that it keeps the bugs off.
Conclusion: Because in a double-blind clinical trial, many parents can correctly guess that their child is receiving active drug, this may influence compliance with the protocol.
While people may correctly guess that their pressures are elevated, "feeling very well has nothing to do with blood pressure level," they explain.
The better of the two methods was able to reproduce a sound close enough to the original word for Pasley and his fellow researchers to correctly guess the word.
Broadcast live over the course of seven consecutive nights later this year on ITV1, contestants will be able to win £1m on the spin of a wheel, but only if they can correctly guess a series of 50/50 challenges.
She invests even the small details of pop culture with great significance: correctly guess the year that a minor film — say, "Private Benjamin" — was made (1980), and Zalaznick will grant a cool, appraising "Good for you".
The episode's title, "The Crocodile's Dilemma", is a reference to a classic logic puzzle about a father whose child has been stolen by a crocodile; the crocodile promises to return the child, but only if the father can correctly guess if the crocodile will return him or not (a kind of damned if you do, damned if you don't scenario).
It indicates the classifier's ability to correctly guess the proper class for each element.
