Fisher’s famous iris dataset (1936) includes 50 observations each of 3 types of iris plants: Setosa, Virginica, and Versicolor. Among other attributes, the sepal length (in cm) was recorded for each observation. The average sepal length for each type of iris plant is given below:
Setosa: 5.006 cm Virginica: 6.588 cm Versicolor: 5.936 cm
Note: For this data, SSw = 38.96.
(a) Write down and explain the ANOVA model. (5 pts)
(b) Perform an F test to assess whether the sepal lengths are the same for all three types of iris plants. Use α = 0.1. (10 pts)
*Please do not copy other answer written
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