Statistically speaking, at least 30 samples are considered as large samples. But it still depends on the number of variables. In principle, the number of samples is at least more than the number of variables 1. These are the minimum requirements for samples.

For graduation thesis, the selection of data samples can be adjusted according to the research topic. The more complex the problem, the more data is needed.

Small package legal empirical analysis system helps researchers to collect data, clean data and verify data, and can create advanced models such as linear regression, and can constantly adjust data to make empirical evidence significant.