Description: Mean imputation is a statistical method used in data preprocessing to handle missing values in a dataset. This approach involves replacing missing data with the arithmetic mean of the available values for the same variable. Mean imputation is particularly useful in situations where the amount of missing data is relatively small and there is a desire to maintain the integrity of the dataset without deleting entire rows. This method is easy to implement and does not require a deep understanding of advanced statistical techniques, making it a popular choice among data analysts. However, it is important to note that mean imputation can introduce biases, especially if the missing data is not missing at random, as it may reduce the variability of the data and affect the quality of subsequent analyses. Despite its limitations, mean imputation remains a valuable tool in data preprocessing, especially in the early stages of exploratory analysis, where a quick and simple solution is sought to address missing data.
