SCENARIO 10-4
an Agronomist Wants to Compare the Crop Yield

question 112

True/False

SCENARIO 10-4
An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds.She plants 15 fields,
5 with each variety.She then measures the crop yield in bushels per acre.Treating this as a completely randomized design, the results are presented in the table that follows. $\begin{array}{rrrr}\text { Trial}&\text { Smith}&\text { Walsh}&\text { Trevor }\\1 & 11.1 & 19.0 & 14.6 \\2 & 13.5 & 18.0 & 15.7 \\3 & 15.3 & 19.8 & 16.8 \\4 & 14.6 & 19.6 & 16.7 \\5 & 9.8 & 16.6 & 15.2\end{array}$
-Referring to SCENARIO 10-4, the decision made at 0.005 level of significance implies that all 3 means are significantly different.

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Definitions:

Cause-And-Effect Diagram

A visual tool that identifies potential causes of a problem and organizes them into categories.

Statistical Stability

The property of a statistical measure to remain constant over time or across different samples.

Special Causes

Unusual, not predictable factors in a process that can cause variations and are not part of the process itself.

Common Cause Variation

Variation that is inherent in a process over time, caused by factors that are consistently and predictably present.