Data cleaning involves identifying and correcting (or removing) inaccuracies and inconsistencies in data to improve data quality.
A data warehouse is a centralized repository that stores large amounts of data from multiple sources, optimized for query and analysis.
Data analytics is used to examine test results and other related data to make informed decisions and improve testing processes.
The mean is the average of all values in a dataset and is commonly used to represent the central tendency.
Bar charts are a common visualization tool used in data analytics to represent data visually, making it easier to interpret.
