The article Root Dentine Transparency: Age Determination
Chapter 0, Problem 13.20(choose chapter or problem)
The article Root Dentine Transparency: Age Determination of Human Teeth Using Computerized Densitometric Analysis (American Journal of Physical Anthropology [1991]: 2530) described a study in which the objective was to predict age (y) from percentage of a tooths root with transparent dentine. The accompanying data are for anterior teeth. x 15 19 31 39 41 44 47 48 55 65 y 23 52 65 55 32 60 78 59 61 60 Use the accompanying MINITAB output to decide whether the simple linear regression model is useful. The regression equation is Age = 32.1 + 0.555percent Predictor Coef Stdev t-ratio p Constant 32.08 13.32 2.41 0.043 percent 0.5549 0.3101 1.79 0.111 s = 14.30 R-sq = 28.6% R-sq(adj) = 19.7% Analysis of Variance Source DF SS MS F p Regression 1 654.8 654.8 3.20 0.111 Error 8 1635.7 204.5 Total 9 2290.5
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