#### 8.2.58.70 tblish.dataset.trees ¶

Static Method: `out =` trees `()` ¶

  Diameter, Height and Volume for Black Cherry Trees

  #### Description ¶

  This data set provides measurements of the diameter, height and volume of timber in 31 felled black cherry trees. Note that the diameter (in inches) is erroneously labelled Girth in the data. It is measured at 4 ft 6 in above the ground.

  #### Format ¶

  `Girth`

    Tree diameter (rather than girth, actually) in inches.

  `Height`

    Height in ft.

  `Volume`

    Volume of timber in cubic feet.

  #### Source ¶

  Ryan, T. A., Joiner, B. L. and Ryan, B. F. (1976). The Minitab Student Handbook. Duxbury Press.

  #### References ¶

  Atkinson, A. C. (1985). Plots, Transformations and Regression. Oxford: Oxford University Press.

  #### Examples ¶

      t = tblish.dataset.trees;

      figure
      tblish.examples.plot_pairs (t);

      figure
      loglog (t.Girth, t.Volume)
      xlabel ("Girth")
      ylabel ("Volume")

      # TODO: Transform to log space for the coplot

      # TODO: Linear model