The datafile named Stroke will be used for this project. Use Risk as the dependent variable.

1. Start with a simple linear regression equation using one of the other variables as an independent variable. Test the model and report your findings with regards to whether the model can be established and how good it is in terms of fit.
2. Add other variables to the model one by one until you get the best model. Then report your findings:
   1. What are your steps? Report what you do in each step. For example, in step 2, you have added another variable to the model. In another step, you have recoded a variable, etc.
   2. Report the comparisons of the key indicators from the model test results that are used to show whether adding a new variable to the model is good or not. Use a table to present these comparisons.
   3. What is your conclusion after doing the comparisons?

STROKE DATA

Risk	Age	Blood Pressure	Smoker
12	57	152	No
24	67	163	No
13	58	155	No
56	86	177	Yes
28	59	196	No
51	76	189	Yes
18	56	155	Yes
31	78	120	No
37	80	135	Yes
15	78	98	No
22	71	152	No
36	70	173	Yes
15	67	135	Yes
48	77	209	Yes
15	60	199	No
36	82	119	Yes
8	66	166	No
34	80	125	Yes
3	62	117	No
37	59	207	Yes