Kapitel 4

Axel Duvebäck & David Sivén

Svar på övningsfrågor till kapitel 4.

4.03

a) Mean: 65.2 Minimum: 53.5

b) Mean: 73.8 Minimum: 61.4

c) Mean: 69.6 Minimum: 60.2

4.04

a) 9.50 b) 12.70 c) service d) 2.20 e) 4.65

4.05

a) mod 2, var=4.8 b) mod1, var=26.4

c) The variance of residuals plus the variance of fitted model values gives the variance of the variable being modeled. =TRUE

4.06

a) 9.02

b) 7.88

c) 9.40

d) 7.68

4.07

a) 3.58

b) 3.58

c) 2.51

d) mod0