Studying Probability

The Quantitative portion of the CAT contains questions on a variety of math topics. One of those topics is probability. CAT questions of this sort ask you to look for the likelihood that something will occur. Probability is not as familiar to many as Algebra, Geometry, and other topics on the test. This is why some test-takers hesitate when they see the word “probability” on a summary of the CAT. However, this is just another topic that can be mastered with study and practice. You may already know that there are certain formulas that can help solve CAT probability questions, but there is more to these problems than teasing out the right answers. Take a look at some advice on how to tackle CAT probability questions to calm your fears about the test: Probability Formulas As you work through probability practice questions, you will need to know a few formulas. One key formula to remember is that the probability equals the number of desired outcomes divided by the number of possible outcomes. Another formula deals with discrete events and probability – that formula is P(A and B) = P(A)*P(B). Figuring out the probability of an event not occurring is one minus the probability that the event will occur. Putting these formulas into practice is the most effective way to remember them. Is it Enough to Know the Basic Formulas for Probability? Some test-takers believe that once you know the formulas related to probability for questions, then you have the keys to success on this portion of the test. Unfortunately, that is not always the case. The creators of the CAT are not just looking at your ability to plug numbers into formulas – you must understand what each question is asking and why you arrived at a particular answer. Successful business executives use reason and logic to arrive at the decisions they make. The creators of the CAT want to see how good you are at using these same tools to solve problems. The Value of Practice Exams Taking a practice CAT can help you determine your skill level when it comes to probability questions and problems on every other section of the test. Also, a practice exam gives you the chance to become accustomed to the amount of time you’ll have to finish the various sections of the test. Your performance analysis can prove to be one of the most valuable resources you have when starting to prepare for the CAT. Follow-up practice tests can be just as valuable as the first one you take. These tests reveal your progress on probability problems and other skills on the CAT. The results can guide you on how to adjust your study schedule to focus more time on the subjects that need it. Getting the Right Kind of Instruction When it comes to probability questions, CAT creators have been known to set subtle traps for test-takers. In some cases, you may happen upon a question with an answer option that jumps out at you as the right choice. This could be a trap.