After collecting and evaluating data, it's time to analyze it in order to find patterns, trends, or insights that can help answer your question. Depending on the type and amount of data you have, there are various methods and tools for analysis. Descriptive analysis is a popular method which summarizes and presents data using charts, tables, or graphs; it can help compare different groups or identify outliers. This type of analysis can be done with Excel, Google Sheets, or Tableau. Inferential analysis uses statistical techniques such as hypothesis testing, correlation, or regression to measure relationships between variables or estimate the effect of one variable on another. This type of analysis can be done with R, Python, or SPSS. Exploratory analysis is another method which explores data using clustering, segmentation, or factor analysis to discover hidden patterns or groups in the data; this type of analysis can be done with SAS, MATLAB, or RapidMiner.