![]() Pop the corn by allowing the water inside to turn to steam and expand the kernalģ. Measure the mass of several unpopped popcorn kernalsĢ. In _ you will see the topics and tools that you will need to finish this and other lab reports this semester (ex: definitions and equations of different items such as mean and standard deviation, rules for significant figures and rounding, etc.) _ provides a tutorial in the use of Excel Appendix iĪppendix II The popcorn kernals used in experiment 2 have or have not been stored in the first floor lab prep area? have Put the instructions for Experiment 2 in order. ![]() Independently the purpose of experiment 2 is to introduce you to statistical analysis and the tools necessary to analyze the data you will collect in other experiments this semester. ![]() to apply statistical tests to dara sets to determine if data points can be rejected (Q-test) and to determine statistical significance (t-test) For experiment 2, students complete the experiment in class _ but complete the rest of the assignment (calculations and questions) _ as a group to apply statistical formulae to calculate the mean and standard deviation of a data set What are expamples of dependent variables? absorbance reading, temperature, or pH measurement the "best fit" line does or does not have to go through all the data points? (this is typical when dealing with REAL data) does not Does the calculated line have to go through the origin (0,0)? no What is the correlation coefficient number for a perfect fit? 1.000 What correlation coefficient number should you be able to obtain? > 0.990 This is the average deviation of the individual data points from the calculated line RMSE (root mean square error) What is the purpose of experiment 2: Moisture Content of Popcorn? -to learn the basics of statisctical analysis that will be used throughout CHM 144 and 145
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