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curtez11
13.03.2020 •
Mathematics
For a set of data: x = (0,1,2,3,4,5,6) and y=(36, 28, 25, 24, 23, 21, 19), determine and interpret the correlation coefficient. Solution: assign("x", c(0,1,2,3,4,5,6)) assign("y",c(36, 28, 25, 24, 23, 21, 19)) cor(x,y) = -0.92638 Interpretation: This means that an increase of x causes a decrease in y. What was done wrong in this solution?
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Ответ:
1/5
Step-by-step explanation:
it appears as those two distinct points on the graph are (-3,1) and (2,2)
so take the difference of the y-values and put it over the difference of the x-values to get a fraction to represent the slope
2-1 / 2-(-3) = 1/5
if you start from the point (-3,1) you must rise by one unit and then run five units to the right to get to (2,2)