Mathematics, 25.12.2019 00:31 ciralove2004
Annual high temperatures in a certain location have been tracked for several years. let xx represent the year and yy the high temperature. based on the data shown below, calculate the correlation coefficient (to three decimal places) between xx and yy. use your calculator! x y4 43.655 40.746 38.537 37.228 33.019 30.610 29.8911 27.1812 25.8713 23.5614 22.2515 18.6416 18.3317 16.9218 13.8119 9.9
Answers: 2
 ![r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}](/tpl/images/0432/2824/ec454.png)
![r=\frac{16(4232.89)-(184)(430.11)}{\sqrt{[16(2456) -(184)^2][16(13071.600) -(430.11)^2]}}=-0.996](/tpl/images/0432/2824/6495e.png)
Another question on Mathematics
Mathematics, 21.06.2019 17:00
The following graph shows the consumer price index (cpi) for a fictional country from 1970 to 1980? a.) 1976 - 1978b.) 1972 - 1974c.) 1974 - 1976d.) 1978 - 1980
Answers: 1
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 23:00
Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.
Answers: 1
Mathematics, 22.06.2019 01:00
Find the value of the variable and the length of each chord for #5 and #6.
Answers: 1
You know the right answer?
Annual high temperatures in a certain location have been tracked for several years. let xx represent...
Questions
Mathematics, 15.07.2019 07:30
Social Studies, 15.07.2019 07:30
Biology, 15.07.2019 07:30
Mathematics, 15.07.2019 07:30
English, 15.07.2019 07:30
Health, 15.07.2019 07:30
History, 15.07.2019 07:30
Social Studies, 15.07.2019 07:30
Computers and Technology, 15.07.2019 07:30
