I am a graduate student with very little training in statistics. My supervisor has assigned me a small project in which I must select an appropriate statistical test. The project involves 20 microlitre pipette tips. Pipette tips are used to dispense small volume of liquids in experiments. The tips are sold in lots of 50 and I must assess whether differences exist between 8 different lots. I performed an experiment in which I dispensed and weighed ten 20uL samples for each tip in a lot. I then calculated the mean sample weight dispensed for each tip. This gave me a total of 50 samples for each of the eight lots(population). I have decided to perform a one way ANOVA test.
Questions: 1. Is this an appropriate test? 2. Does the fact that each of the 50 samples in a lot is a mean itself have any influence on the statistical test. That is, can means be used to calculate a mean for the population(lot)? . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
