How to Calculate Probability Step by Step

1. Choose Your Data Set: Start by picking a relevant data set. This could be something like survey results or historical records.

2. Define the Event: Next, get clear on what event you’re looking at. For example, maybe you want to find the chances of "rolling a 3 on a die."

3. Count What You Want: Figure out how many outcomes are good for you. When rolling a die, there is only 1 way to roll a 3.

4. Count All Possible Outcomes: Now, look at all the possible outcomes. With a die, there are 6 different results you can roll (1, 2, 3, 4, 5, or 6).

5. Find the Probability: To find the probability, you use a simple formula:

   Probability (P) = Number of Good Outcomes / Total Outcomes

   So for rolling a 3, it would look like this:

   P(rolling a 3) = 1 (good outcome) / 6 (total outcomes)

6. Understand the Result: Finally, look at what this means.

   The probability of rolling a 3 is about 0.1667 or 16.67%.

This means if you roll the die many times, you might roll a 3 about 17 times out of every 100 rolls!