Generally, you can expect AP Statistics to be an average-difficulty AP class, and likely the easiest of the AP math classes.
Is AP Statistics worth taking?
Taking the AP® Statistics exam is definitely worth your time, effort, and energy. ... Perhaps the most important benefit of taking the AP® Statistics exam is the financial benefit. Since you get college credit for passing the AP® Statistics exam, this means you won't have to pay for college credit hours to take the course.
Is AP Stats harder than AP Calc?
The content covered in AP Statistics is generally considered easier and more manageable than that of the two AP Calculus exams. Many students have learned some statistical concepts in previous math classes, and they often find the concepts easier to understand than other math subjects such as calculus or geometry.