Question

AE
4 Sets of china are individually packed to
customers' requirements. The packaging
manager introduces a new procedure in which
each packer is responsible for all stages of an
order from its initial receipt to final despatch In
order to be able to estimate the time to pack
particular orders, he recorded the time taken by a
particular packer to complete his first 11 sets
packed by the new system. The data are in order
of packing
No of items
in set
40
62
21 30
Time in min
to complete
packaging 545 370 525 440 315 285
21
No of items
In set
10
57
20
38
6
Time in min
to complete
packaging 220 410 360 285 320
(a) Draw a scatter diagram of the data Label the
points from 1 to 11 according to the order of
packing
(b) Calculate the regression line of time' on
number of items and draw it on your seatter
diagram Comment on the pattern revealed
and suggest why it has occurred
(c) The regression line for the last 6 points only
is y=188 +3.70x. Draw this line on your
scatter diagram
(d) The packaging manager estimated that the
next order, which consisted of 44 items,
would take 406.31 minutes. Comment on this
estimate and the method by which you think
it was made
Make your own estimate of the packaging
home for this order and explain why you think
it is better than the packaging manager's
(AEB)​

Answer 1

Answer:

i can't understand ....?..........