Theil’s u-statistic for errors, using a regression forecast, turns out to be < 1.00. what does that mean? u = standard error of the forecast model being used / standard error of the naïve forecast model

a) t'(-3, 6) and v'(0, 3)  

step-by-step explanation:

5050

hope this !

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

0,0

step-by-step explanation: