# Tree diagrams

## What are Tree diagrams :

Tree diagrams are a graphical representation of a sequence of events or decisions and their possible outcomes. They are commonly used in probability and statistics to illustrate the various possibilities and the corresponding probabilities of each event occurring.
One example of a tree diagram is in determining the probability of rolling a certain number on a die. The tree diagram would start with the initial event of rolling the die, and then branch out to the possible outcomes of rolling a 1, 2, 3, 4, 5, or 6. For each of these outcomes, the probability would be 1/6 since there is an equal chance of rolling any number on a die.
Another example of a tree diagram is in determining the probability of drawing a certain card from a deck of cards. The tree diagram would start with the initial event of drawing a card, and then branch out to the four suits of cards: hearts, diamonds, clubs, and spades. For each of these suits, there are 13 possible cards that could be drawn (ace, 2, 3, etc. up to king). So the probability of drawing any specific card would be 1/52, since there are 52 cards in a deck.
Tree diagrams can also be used to represent the different paths that can be taken in a decision-making process. For example, a tree diagram could be used to determine the most cost-effective option for a company to take in order to expand their business. The tree diagram would start with the initial decision of expanding the business, and then branch out to the different options available (such as opening a new location, increasing production, or acquiring a competitor). Each of these options would then branch out to the potential costs and benefits associated with them. The company can then use the tree diagram to weigh the pros and cons of each option and make a informed decision on the best course of action.
Tree diagrams can also be used in game theory to analyze different strategies and their potential outcomes. For example, a tree diagram could be used to determine the optimal strategy for a player in a game of rock-paper-scissors. The tree diagram would start with the initial decision of the player’s choice (rock, paper, or scissors), and then branch out to the possible outcomes based on the opponent’s choice. The player can then use the tree diagram to determine the probability of winning or losing based on their chosen strategy and the potential strategies of their opponent.
Overall, tree diagrams are a useful tool for visualizing and analyzing the various possibilities and probabilities of a sequence of events or decisions. They can be applied in a wide range of fields, including probability, statistics, decision-making, and game theory, and can help individuals and organizations make informed decisions based on the potential outcomes of their actions.