The famous iris dataset (I included a screenshot of spreadsheet it is long so two screenshots) was first published by Ronald Fisher. The dataset contains 50 samples from 3 iris species: setosa, virginia, and versicolor. Four features are measured, all in cm: sepal length, sepal width, petal length, and petal width.

Using the formula Y=bx+a

What is the equation for the least square regression line where the independent or predictor length is sepal and the dependent or response variable is sepal width for iris versicolor?

What is the predicted sepal width for iris versicolor for a flower with a sepal length of 4.22?