PC World reports the following text and graphics speeds (pages per minute, or ppm) for its top-rated inkjet printers.
|
x = ppm
Plain Text
|
Y = PPM
Graphics
|
x = ppm
Plain Text
|
Y = PPM,
Graphics
|
|
4.7
|
0.7
|
48
|
0.6
|
|
7.3
|
%3
|
41
|
I t
|
|
SP
|
09
|
48
|
10
|
|
7.7
|
7.2
|
64
|
11
|
|
SA
|
0.9
|
6.2
|
16
|
a. Draw a scatter diagram representing these data.
b. Using the "eyeball" method, fit a straight line to the data.
c. Does there appear to be any relationship between the variables? If so, is the relationship direct or inverse?