👉 A scaler is a mathematical concept that represents a value or an object in a system with respect to another variable. Scalars are often used in statistics, machine learning, and data analysis to represent quantitative variables such as values, percentages, and ratios. In simple terms, scalers are like "units" or "sizes" when referring to numerical data. They represent the value of a variable relative to other variables within that system. For example, if we have two variables X and Y in a linear regression