Using Exam Variance Analysis to prepare for the CMA, CIA, and CPA Exams
This continues a series of posts that looks at preparing for an exam using some of the same concepts that you might study for the CMA, CPA, or CIA exams.
In management accounting, variance analysis is the process of looking at the differences between the actual and budgeted results for a period. Common uses of variance analysis are in manufacturing expenses, i.e. direct material, direct labor, and overhead. When teaching variance analysis, I emphasize that we should not ignore variances that are favorable (positive) because we should look to see what that department is doing differently that led to the positive variance.
Actual vs Expected (“budgeted”) Results
When preparing for an exam, we can look at the difference between an actual result and an expected (or “budgeted”) result with practice questions. We recommend for most exams that you should be getting at least 80 – 85% of practice questions correct in order to be ready for the exam. So, when you answer practice questions, you can measure your actual result against your “budgeted” result and analyze where you need further study.
Answering Practice Questions
When you are answering practice questions, you should pay attention to how well you know each topic and how easily you can answer the questions. There are different ways that you can achieve a “passing” score, and you are in the best position to know how you did it. What do I mean by that? Let us say that you answer 10 questions and your goal is to get at least 8 correct. When doing the questions, there are 6 questions that you know for sure, and four questions that you mostly guessed on. If you got lucky in your guessing, you might get 8 or 9 of the 10 questions correct. But, in reality, you really only knew 60% of the questions, and the 60% score is the one that really matters.
Therefore, when you look at your results on a quiz or mock exam, you, and only you, are in the best position to make an assessment of your knowledge. Candidates often ask us if they are ready for the exam based on a mock exam score. That is an impossible question for us to answer; we don’t know how many questions you got right because you knew the answer and how many you got right because you guessed. On a mock exam, there’s a big difference between scoring 90% with 10 lucky guesses (you are probably ready for the exam) and scoring 90% with 25 lucky guesses (you are probably not ready for the exam).
Assessing Your “Total Variance”
Being honest in your assessment of your “total variance” is one of the best things you can do while studying for the exam. What are some of the strategies you have used in assessing your true variance when reviewing practice questions?
Brian Hock, CMA, CIA