Final answer:
The logical_test for the IF function in Excel to check if the stock percent change in cell A5 is 3% or higher is 'A5 >= 0.03'. If true, it outputs 'OK'; otherwise, it outputs 'WATCH'.
Step-by-step explanation:
The logical_test argument for this IF function should determine if the percent change in stock price, calculated in cell A5, is greater than or equal to 3%. You would use the following logical_test in the IF function: A5 >= 0.03. In this case, the percent change is being compared to 0.03 (which is the decimal representation of 3%) to see if it meets the condition for being greater than or equal to 3%.
If the condition is true (i.e., the value in A5 is greater than or equal to 0.03), the function will result in "OK". If the condition is false (i.e., the value is less than 0.03), the function will result in "WATCH".