a scatterplot contains the points: (1996, 20) (1997, 23) (1998, 25) (1999, 29) (2000, 30) For the data set shown in the scatterplot, what is the BEST approximation of the slope for the line of best fit?
A: 1.2
B: 2.5
C: 3.9
D: 4.5
In order to find the best approximation of the slope for the line of best fit, we need to calculate the slope by using the formula:
slope = (change in y)/(change in x)
In this case, the change in x is 2000-1996=4 and the change in y is 30-20=10.
Therefore, the slope = 10/4 = 2.5.
The best approximation of the slope for the line of best fit is therefore B: 2.5.