You have 1 interval Independent Variable (X) and 1 ratio dependent variable (Y). You also find the correlation coefficient between X and Y (r = -0.234).

Participant	X	Y
S1	4	1
S2	5	2
S3	6	3
S4	1	6
S5	2	7
S6	3	8
S7	7	4
S8	8	5
S9	9	6
SUM	45	45
SD	2.74	2.35

Calculate a "b" value.

(If the final value is negative, make sure to include it in your answer)