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)
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 19:00, priscillaan
Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !
Answers: 1
Mathematics, 21.06.2019 20:30, makailaaa2
Ateam has p points. p = 3w + d w = wins d = draws a) a football team has 5 wins and 3 draws. how many points does the team have?
Answers: 1
Mathematics, 21.06.2019 23:20, kawaiiiiiiii4715
Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .
Answers: 2
Do you know the correct answer?
Find the correlation coefficient of the line of best fit for the points (-3,-40), (1,12), (5,72), (7...
Questions in other subjects:
Mathematics, 02.02.2021 14:00
Mathematics, 02.02.2021 14:00
