Which statement correctly describes the behavior of the `$_POST` superglobal when `Content-Type` is `application/json`? PHP IntermediateHard Try Now
Which statement accurately describes the behavior of the `static` keyword inside a class method? PHP IntermediateHard Try Now
What is the output of $a = ‘1’; $b = &$a; $b = ‘2’; unset($a); echo $b;? PHP IntermediateHard Try Now
Which type of variable is strictly local to the function scope and cannot access global variables directly? PHP IntermediateHard Try Now
How does PHP handle the assignment of a variable by reference when the original variable is unset? PHP IntermediateHard Try Now
Which statement accurately describes the behavior of the `$_REQUEST` superglobal in PHP? PHP IntermediateHard Try Now
What is the output of the following code snippet? $a = ‘5’ + 2; echo gettype($a); PHP IntermediateHard Try Now
What is the primary consequence of applying One-Hot Encoding to a categorical feature with high cardinality? Data ScienceEasy Try Now
Which method is most appropriate for imputing missing values in a numerical feature with significant outliers? Data ScienceEasy Try Now
What is the primary purpose of performing feature scaling in a machine learning pipeline? Data ScienceEasy Try Now
Which technique is most effective for handling missing values in a small dataset with non-random missingness? Data ScienceMedium Try Now
What is the consequence of using ‘handle_unknown=’ignore” in OneHotEncoder during transformation? Data ScienceMedium Try Now
