The table shows male and female life expectancy in several countries.
Country
South
Africa Yemen Mexico Nigeria Macau
Ukraine Ethiopia Guam
63.07
53.99
75.46
50.34
62.05
73.84
48.95
81.47
Male life
expectancy
(years)
74.77
59.21
81.73
48.45
66.27
79.63
55.33
87.54
Female life
expectancy
(years)
What is the value ofr, the correlation coefficient?
Round your answer to the nearest hundredth.
Enter your answer in the box.

fdvs

step-by-step explanation: vsfdvsfvd

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

55.44 inches

step-by-step explanation:

part a. assuming a perfectly linear relationship, we can find the slope from the first two data points.

slope = m = (change in rainfall)/(change in years)

= (61.80 -62.33)/(2005 -2004) = -0.53/1 = -0.53

then the point-slope form of the equation of the line can be written as

y = m(x -h) +k . . . . . m = -0.53, (h, k) = (0, 62.33)

y = -0.53x +62.33 . . . x = years after 2004

part b. in 2017, x = 2017 -2004 = 13. then the predicted rainfall is

y = -0.53·13 +62.33 = 55.44 . . inches

the predicted rainfall in 2017 is 55.44 in.