Why is the equation (see file)not the equation of a line of best fit for the data set below?
Age: (years)
23
45
39
74
63
52
59
28
35
11
26
49
IQ:
76
82
113
111
109
115
101
127
92
123
128
99
Please help

Question

anonymous · Answer

@phi

phi · Answer

is there more to this question ?

anonymous · Answer

attachment

anonymous · Answer

so sorry I forgot to post the picture...

phi · Answer

Do you have a plot of the points you posted in the question ?

anonymous · Answer

no I do not

phi · Answer

Here is a graph

phi · Answer

A best fit line minimizes the (squared) distance to the points.  By eye, it should be flatter

phi · Answer

Like this

anonymous · Answer

awesome thank you so much!

anonymous · Answer

that would mean that the slope of the line is negative but the data set has a positive correlation correct?

anonymous · Answer

or would there be no correlation because now that i looked at it closely there seems to be no relation between the  numbers

phi · Answer

A flat line (zero slope) means little or no correlation

phi · Answer

or, to say it another way, if you know the x value, you can't really guess what its y value is (no correlation)

anonymous · Answer

great! thanks for the help!