Calculating market size is an essential step in creating a marketing plan as it helps to identify the potential market opportunity for a product or service. Here are some steps to help you calculate market size for your marketing plan: Define your target market: Before calculating the market size, you need to define your target market, which is the group of consumers who are most likely to buy your product or service. This could be based on factors such as age, gender, location, income, interests, or behavior. Determine the total addressable market (TAM): The TAM is the total size of the market that your product or service could potentially serve, without any restrictions or limitations. This can be estimated by researching industry reports, government data, or market research studies. Identify the served available market (SAM): The SAM is the segment of the TAM that you can realistically target and serve based on factors such as your business capabilities, geographic reach, and distribution channels. This can be estimated by researching competitors, analyzing customer data, or conducting surveys. Calculate the target market share: The target market share is the percentage of the SAM that you plan to capture with your product or service. This can be based on factors such as your marketing strategy, pricing strategy, and product differentiation. Calculate the market size: To calculate the market size, multiply the SAM by the target market share. For example, if the SAM is 100,000 and you plan to capture a 10% target market share, the market size would be 10,000. It's important to note that market size is not a fixed number, and it can vary based on external factors such as economic conditions, industry trends, or consumer behavior. Therefore, it's recommended to regularly monitor and update your market size estimates to ensure that your marketing plan remains relevant and effective. In this activity, you just need to submit Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Share of Market (SOM) calculation only about the smartphone user in Australia of different age group between 0-19, 20-49, and 50-over from different states in a table.