Question 710621: Consider the following set of ordered pairs.
x /y
1 /20
2 /18
3 /20
4 /15
3 /14
5 /12
5 /11
7 /8
9 /7
10 /5
11 /4
12 /4
14 /2
15 /2
15 /1
a)Construct a scatter diagram and sketch in a trendline.
b)Does this represent a positive of a negative association?
(c) Use the two points (2, 18) and (7, 8) to estimate the equation of the trend line.
d)Use your equations from part (c) to estimate the y-value for x = 20.
(