What is the basic difference between account analysis method and high-low method as applied in cost estimation?

The basic difference between the account analysis method and the high-low method in cost estimation lies in their approach to identifying fixed and variable costs. The account analysis method involves a detailed review of each account in the financial records to classify costs based on their nature, while the high-low method uses only the highest and lowest activity levels to estimate variable and fixed costs, making it simpler but potentially less accurate. The account analysis method provides a more comprehensive view, whereas the high-low method is quicker but may overlook variations within the data.