Find the value of the linear correlation coefficient r for the paired data below which consists of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87
a. 0.678
b. 0.224
c. - 0.678
d. - 0.224
2007-07-22 15:24:12 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
b. 0.224 You can solve this easily with excel using the function =pearson(array1,array2)
2007-07-22 15:32:42 · answer #1 · answered by Anonymous · 0⤊ 0⤋
answer (a) To get it accomplished in a TI-eighty 3 first you may prepare your Diagnostics On. sort (2d) (Catalog) "Above the 0" Scroll right down to DiagnosticsOn Hit enter sort attempt A ends up in L1 from record editor sort attempt B ends up in L2 from record editor Now do a linear regression.. heres how interior the calculator Press The Stat key flow below the CALC menu and flow to Linreg(ax + b) . it is going to grant you r (correlation coefficient) now.
2016-11-10 03:28:39 · answer #2 · answered by ? 4 · 0⤊ 0⤋
If you don't have a calculator that will do the stats, such as a TI-83 or TI-84, or can't set it up in Excel, see the link for the formula.
2007-07-22 15:29:43 · answer #3 · answered by Philo 7 · 0⤊ 0⤋