Statistics Homework Solutions 205

Statistics Homework Solutions 205 - 205 SUPPLEMENTARY...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 205 SUPPLEMENTARY EXERCISES FOR CHAPTER 8 StDev 0 0068959 0 20576 1 6887 4 043 StDev 0 013498 0 58342 7 7602 40 45 72 293 ¨ ¨ ¨ P 0 000 0 855 0 665 0 533 0 590 ¨ ¨ ¨ ¨ ¨ ¨ ¨ ¡ ¨ ¡ ¨ ¨ ¨ ¡ ¨ ¨ ¨ ¨ ¨ ¨ ¡ ¨ ¨ ¨ ¨ ¡ T 17 152 0 18702 0 44515 0 64333 0 55548 ¨ ¨ ¨ ¨ ¨ Coef 0 23152 0 10911 3 4544 26 022 40 157 P 0 000 0 069 0 666 0 382 ¨ Quartic Model Predictor Constant x x2 x3 x4 T 32 648 1 9977 0 44206 0 90843 ¨ ¨ ¨ ¡ ¨ (d) Coef 0 22514 0 41105 0 74651 3 6728 ¨ Cubic Model Predictor Constant x x2 x3 ¨ (c) (e) The quadratic model. The coefficient of x3 in the cubic model is not significantly different from 0. Neither is the coefficient of x4 in the quartic model. ¨ ¨ ¨ ¨ ¨ ¡ ¨ ¨ ¨ ¨ ¨ ¤ ¨ ¨ ¨ ¨ ¨ ¨ ¡ ¨ ¨ ¥ ¨ ¨ ¨ ¨ ¡ ¨ SS 20.349 0.045513 20.394 P 0 335 0 780 0 000 0 532 0 094 0 925 ¨ ¡ ¡ ¡ ¢ ¨ ¡ Analysis of Variance Source DF Regression 5 Residual Error 10 Total 15 T 1 0123 0 28666 8 3233 0 64672 1 8475 0 09639 ¨ ¨ StDev 0 092621 2 2088 0 30151 8 2231 0 17396 1 5778 0 258 ¨ ¤ Coef 0 093765 0 63318 2 5095 5 318 0 3214 0 15209 2 2679 0 122 ¨ Predictor Constant x1 x2 x2 1 x2 2 x1 x2 0 58931 0 12 ¡¥ 17. (a) 0 21995 ¨ (f) y MS 4.0698 0.0045513 F 894.19 P 0.000 (b) The model containing the variables x1 , x2 , and x2 is a good one. Here are the coefficients along with their 2 standard deviations, followed by the analysis of variance table. P 0 218 0 000 0 000 0 000 ¨ ¨ T 1 2997 7 0805 17 218 4 7279 ¨ ¨ ¡ ¨ ¨ ¨ ¨ ¡ ¨ ¨ ¨ ¨ ¡ ¨ ¨ ¡ Analysis of Variance StDev 0 068181 0 30057 0 13985 0 059211 ¨ Coef 0 088618 2 1282 2 4079 0 27994 ¨ Predictor Constant x1 x2 x2 2 ...
View Full Document

This note was uploaded on 12/20/2011 for the course STA 3163 taught by Professor Mattgilg during the Fall '11 term at UNF.

Ask a homework question - tutors are online