Yes, Chis squared test are among the most common nonparametric statistics tests.
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When the variable that is being tested has an unknown distribution.
A chi-square test is often used as a "goodness-of-fit" test. You have a null hypothesis under which you expect some results. You carry out observations and get a set of results. The expected and observed results are used to calculate the chi-square statistic. This statistic is used to test how well the observations match the values expected under the null hypothesis. In other words, how good the fit between observed and expected values is.
experiment
A statistician may have some idea about some statistics in a data set, and there is a need to test whether or not that hypothesis is likely to be true. Data are collected and a test statistic is calculated. The value of this test statistic is used to determine the probability that the hypothesis is true.
To test their hypothesis Czarnowski and Triantafyllou used the Scientific Method.Also since i mentioned if you are wondering the steps of the Scientific Method are:QuestionResearchHypothesisExperimentAnalyze your dataConclusion