2) How did your estimates vary according to the different sampling methods you used? 3) Compare your results to someone else in the class. Were your results similar? 4) Pool the results of all students for the mean yields from the simple random samples and make a class boxplot. Repeat for means from vertical strata and from horizontal strata. Compare the class boxplots for each sampling method. What do you see? 5) Which sampling method should you use? Why do you think this method is best? 6) What was the actual yield of the farmer’s field? How did the boxplots relate to this actual value? Part II: The farmer was very impressed with the results of your study and seeks to improve the yield of that part of the field the following year. Believing that irrigation is the answer, a new system was installed. The following year’s yield was: Redo your sampling a SRS, vertical stratification, and horizontal stratification. Be certain to mark on the grids the plots you choose. Simple Random Sample:
2) How did your estimates vary according to the different sampling methods you used? 3) Compare your results to someone else in the class. Were your results similar? 4) Pool the results of all students for the mean yields from the simple random samples and make a class boxplot. Repeat for means from vertical strata and from horizontal strata. Compare the class boxplots for each sampling method. What do you see? 5) Which sampling method should you use? Why do you think this method is best? 6) What was the actual yield of the farmer’s field? How did the boxplots relate to this actual value? Part II: The farmer was very impressed with the results of your study and seeks to improve the yield of that part of the field the following year. Believing that irrigation is the answer, a new system was installed. The following year’s yield was: Redo your sampling a SRS, vertical stratification, and horizontal stratification. Be certain to mark on the grids the plots you choose. Simple Random Sample:
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