Answer:
Step-by-step explanation:
Answer:
Following are the responses to the given question:
Step-by-step explanation:
Mean Absolute Deviation MAD
Mean squared error
linear trend equation is 

Naive method

Please find the attached file.
Answer:
B: x=-2
Step-by-step explanation:
This is because x=-2 is where the parabola is split into two equal halves.
Answer:
28
Step-by-step explanation:
4/65 then ?/455
divide 455 by 65 to get 7
4/65=4x7/65x7(455)
4/65=28/455
therefore there are 28 boxes with the coupon out 455