Mandy is writing an item where participants respond by selecting a number that indicates how much they agree with a statement. She thinks it is really important to make sure the numbers on her scale have equal intervals between them. What is the primary advantage of doing this?Mandy is writing an item where participants respond by selecting a number that indicates how much they agree with a statement. She thinks it is really important to make sure the numbers on her scale have equal intervals between them. What is the primary advantage of doing this?