Question

In: Statistics and Probability

Person Height Weight 1 60 114 2 60 60 3 61 200 4 62 240 5...

Person	Height	Weight
1	60	114
2	60	60
3	61	200
4	62	240
5	63	133
6	63	220
7	64	104
8	65	135
9	65	120
10	65	123
11	66	113
12	66	205
13	66	54
14	67	170
15	67	186
16	67	198
17	67	132
18	68	142
19	69	150
20	69	188
21	70	199
22	70	201
23	70	106
24	71	112
25	71	115
26	72	117
27	72	78
28	73	95
29	73	109
30	73	110
Mean	67.17	140.97
Standard Deviation	3.90	48.54
Correlation	-0.195

Step 2: Build Linear Model

help me find:

Find Slope:

find y-intercept:

Expert Solution

Given that, mean of height = 67.17

mean of weight = 140.97

standard deviation of height (Sx) = 3.90

standard deviation of weight (Sy) = 48.54

correlation coefficient of r = -0.195

We want to find, the slope (b1) and y-intercept (b0)

And

Therefore, we get,

Slope = -2.427

y-intercept = 303.9916

Note : Using Excel we get,

slope = -2.4351 and intercept = 304.5217

orchestra answered 2 years ago

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