Hello all. I am performing chemistry experiments and recording the times of various observed results. What I am doing currently is performing the test several times in order to determine what result is "normal." My goal is to determine a range as a standard by which all future tests will be compared against. I do not know the correct expected time for these results; this will be set by my experiments. Say for example we use this test data in seconds: 22 25 26 25 25 25 26 27 24 25 The full range of data is 22 to 27 with the average being 25, But maybe the "acceptable" range should be 25-27. I would like to know what tools I should use to analyze this data to determine statistically what range of data should be considered normal. Thank you.