Consider this dataset 'mortality'

Size	School	Density	Nonwhite	NO	Poverty	Mort.Rate
3.34	11.4	3243	8.8	15	11.7	921.87
3.14	11	4281	3.6	10	14.4	997.875
3.21	9.8	4260	0.8	6	12.4	962.354
3.41	11.1	3125	27.1	8	20.6	982.291
3.44	9.6	6441	24.4	38	14.3	1071.289
3.45	10.2	3325	38.5	32	25.5	1030.38
3.23	12.1	4679	3.5	32	11.3	934.7
3.29	10.6	2140	5.3	4	10.5	899.529
3.31	10.5	6582	8.1	12	12.6	1001.902
3.36	10.7	4213	6.7	7	13.2	912.347
3.39	9.6	2302	22.2	8	24.2	1017.613
3.2	10.9	6122	16.3	63	10.7	1024.885
3.21	10.2	4101	13	26	15.1	970.467
3.29	11.1	3042	14.7	21	11.4	985.95
3.26	11.9	4259	13.1	9	13.9	958.839
3.22	11.8	1441	14.8	1	16.1	860.101
3.35	11.4	4029	12.4	4	12	936.234
3.15	12.2	4824	4.7	8	12.7	871.766
3.44	10.8	4834	15.8	35	13.6	959.221
3.53	10.8	3694	13.1	4	12.4	941.181
3.22	11.4	1844	11.5	1	18.5	891.708
3.37	10.9	3226	5.1	3	12.3	871.338
3.45	10.4	2269	22.7	3	19.5	971.122
3.25	11.5	2909	7.2	3	9.5	887.466
3.35	11.4	2647	21	5	17.9	952.529
3.23	11.4	4412	15.6	7	13.2	968.665
3.1	12	3262	12.6	4	13.9	919.729
3.38	9.5	3214	2.9	7	12	844.053
2.99	12.1	4700	7.8	319	12.3	861.833
3.37	9.9	4474	13.1	37	17.7	989.265
3.49	10.4	3497	36.7	10	26.4	1006.49
2.98	11.5	4657	13.6	1	22.4	861.439
3.26	11.1	2934	5.8	23	9.4	929.15
3.28	12.1	2095	2	11	9.8	857.622
3.32	10.1	2682	21	14	24.1	961.009
3.16	11.3	3327	8.8	3	12.2	923.234
3.36	9.7	3172	31.4	17	24.2	1113.156
3.03	10.7	7462	11.3	26	12.4	994.648
3.32	10.5	6092	17.5	32	13.2	1015.023
3.32	10.6	3437	8.1	59	13.8	991.29
2.99	12	3387	3.6	21	13.5	893.991
3.19	10.1	3508	2.2	4	15.7	938.5
3.08	9.6	4843	2.7	11	14.1	946.185
3.32	11	3768	28.6	9	17.5	1025.502
3.21	11.1	4355	5	4	10.8	874.281
3.23	9.7	5160	17.2	15	15.3	953.56
3.11	12.1	3033	5.9	66	14	839.709
2.92	12.2	4253	13.7	171	12	911.701
3.36	12.2	2702	3	32	9.7	790.733
3.02	12.2	3626	5.7	7	10.1	899.264
3.21	11.1	1883	3.4	4	12.3	904.155
3.34	11.4	4923	3.8	5	11.1	950.672
3.22	10.7	3249	9.5	7	13.6	972.464
3.28	10.3	1671	2.5	2	13.5	912.202
3.25	12.3	5308	25.9	28	10.3	967.803
3.27	12.1	3665	7.5	2	13.2	823.764
3.39	11.3	3152	12.1	11	10.9	1003.502
3.25	11.1	3678	1	3	14	895.696
3.22	9	9699	4.8	8	14.5	911.817
3.48	10.7	3451	11.7	13	13	954.442

The table contains 7 columns of data collected from each of the 60 urban areas. The columns include:

Size: the mean household size

School: the median number of school years completed by those over 22

Density: Population per square mile

Nonwhite: Percentage of the non-white population

NO: Measure of the levels of nitric oxides as a pollutant

Poverty: Percentage of families with an income below the poverty level

Mort.Rate: the mortality rate per 100,000 residents

We will be using multiple regression to measure the effect of the predictor variables Size, School, Density, Nonwhite, NO, and Poverty on the response variable, Mort.Rate.

(1) Before conducting a regression analysis, let's explore the dataset by a plotting pair-wise scatterplot using the plot() command. Add a color of your choice and paste your plot below.

My answer (please let me know if it looks correct):