The airplane data frame has 6 rows and 4 columns. Each data point is the distance flown by one of the of 24 airplanes randomly assigned to the four treatments described below.
A data frame with 24 observations on the following 2 variables.
: distance flown
: one of four treatment values (treat1: no weighting of airplane nose, treat2: one paper clip on the nose, treat3: two paper clips on the nose or treat4: three paper clips on the nose)
Motivated by a class experiment (but artificial).
1 2 3
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