Mathematics, 01.11.2019 06:31 jokerr5584
Find the correlation coefficient of the line of best fit for the points (-3,-40), (1,12), (5,72), (7,137). explain how you guy your answer. use the coefficient to describe the correlation of this data.
Answers: 1
![r = \dfrac{n\sum{xy} - \sum{x} \sum{y}}{\sqrt{n\left [\sum{x}^{2}-\left (\sum{x}\right )^{2}\right]\left [\sum{y}^{2}-\left (\sum{y}\right )^{2}\right]}}](/tpl/images/0355/4398/20321.png)
![r = \dfrac{n\sum{xy} - \sum{x} \sum{y}}{\sqrt{\left [n\sum{x}^{2}-\left (\sum{x}\right )^{2}\right]\left [n\sum{y}^{2}-\left (\sum{y}\right )^{2}\right]}}\\\\= \dfrac{4\times 1451 - 10\times 181}{\sqrt{[4\times 84 - 10^{2}][4\times25697 - 181^{2}]}}\\\\= \dfrac{5804 - 1810}{\sqrt{[336 - 100][102788 - 32761]}}\\\\= \dfrac{3994}{\sqrt{236\times70027}}\\\\= \dfrac{3994}{\sqrt{16526372}}\\\\= \dfrac{3994}{4065}\\\\= \mathbf{0.9825}](/tpl/images/0355/4398/a84d3.png)
Another question on Mathematics
Mathematics, 21.06.2019 16:30
Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15
Answers: 3
Mathematics, 21.06.2019 22:20
Line segment eg is partitioned by point f in the ratio 1: 1. point e is at e (0, 4), and point f is at (1, 3). what are the coordinates of point g? (−1, 5) (2, 2) (3, 1) (4, 0)
Answers: 2
Mathematics, 21.06.2019 23:00
Erik buys 2.5 pounds of cashews. if each pound of cashews costs $7.70, how much will he pay for the cashews?
Answers: 1
Mathematics, 21.06.2019 23:30
Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?
Answers: 2
You know the right answer?
Find the correlation coefficient of the line of best fit for the points (-3,-40), (1,12), (5,72), (7...
Questions
Mathematics, 08.04.2020 04:33
Mathematics, 08.04.2020 04:33
