1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
# include_reference, on-the-fly factors
Code
print(out1)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
------------------------------------------------------------------
(Intercept) | 27.48 | 1.97 | [23.43, 31.53] | 13.92 | < .001
gear [3] | 0.00 | | | |
gear [4] | 0.08 | 1.83 | [-3.68, 3.83] | 0.04 | 0.967
gear [5] | 2.39 | 2.38 | [-2.50, 7.29] | 1.00 | 0.324
am [0] | 0.00 | | | |
am [1] | 4.14 | 1.81 | [ 0.42, 7.85] | 2.29 | 0.030
hp | -0.06 | 0.01 | [-0.09, -0.04] | -6.24 | < .001
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
---
Code
print(out2)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
------------------------------------------------------------------
(Intercept) | 27.48 | 1.97 | [23.43, 31.53] | 13.92 | < .001
gear [3] | 0.00 | | | |
gear [4] | 0.08 | 1.83 | [-3.68, 3.83] | 0.04 | 0.967
gear [5] | 2.39 | 2.38 | [-2.50, 7.29] | 1.00 | 0.324
am [0] | 0.00 | | | |
am [1] | 4.14 | 1.81 | [ 0.42, 7.85] | 2.29 | 0.030
hp | -0.06 | 0.01 | [-0.09, -0.04] | -6.24 | < .001
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
---
Code
print_md(out, engine = "tt")
Output
+--------------+----------------------+----------------------+
| Parameter | m1 | m2 |
+==============+======================+======================+
| (Intercept) | 27.48 (23.43, 31.53) | 27.48 (23.43, 31.53) |
+--------------+----------------------+----------------------+
| gear (3) | 0.00 | 0.00 |
+--------------+----------------------+----------------------+
| gear (4) | 0.08 (-3.68, 3.83) | 0.08 (-3.68, 3.83) |
+--------------+----------------------+----------------------+
| gear (5) | 2.39 (-2.50, 7.29) | 2.39 (-2.50, 7.29) |
+--------------+----------------------+----------------------+
| am (0) | 0.00 | 0.00 |
+--------------+----------------------+----------------------+
| am (1) | 4.14 (0.42, 7.85) | 4.14 (0.42, 7.85) |
+--------------+----------------------+----------------------+
| hp | -0.06 (-0.09, -0.04) | -0.06 (-0.09, -0.04) |
+--------------+----------------------+----------------------+
| | | |
+--------------+----------------------+----------------------+
| Observations | 32 | 32 |
+--------------+----------------------+----------------------+
# include_reference, different contrasts
Code
print(out)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
-------------------------------------------------------------------
(Intercept) | 19.70 | 1.18 | [ 17.28, 22.11] | 16.71 | < .001
cyl [6] | -6.66 | 1.63 | [-10.00, -3.31] | -4.09 | < .001
cyl [8] | -10.54 | 1.96 | [-14.56, -6.52] | -5.38 | < .001
gear [3] | 0.00 | | | |
gear [4] | 1.32 | 1.93 | [ -2.63, 5.28] | 0.69 | 0.498
gear [5] | 1.50 | 1.85 | [ -2.31, 5.31] | 0.81 | 0.426
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
---
Code
print(out)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
-------------------------------------------------------------------
(Intercept) | 25.43 | 1.88 | [ 21.57, 29.29] | 13.52 | < .001
cyl [4] | 0.00 | | | |
cyl [6] | -6.66 | 1.63 | [-10.00, -3.31] | -4.09 | < .001
cyl [8] | -10.54 | 1.96 | [-14.56, -6.52] | -5.38 | < .001
gear [3] | 0.00 | | | |
gear [4] | 1.32 | 1.93 | [ -2.63, 5.28] | 0.69 | 0.498
gear [5] | 1.50 | 1.85 | [ -2.31, 5.31] | 0.81 | 0.426
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
---
Code
print(out)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
-------------------------------------------------------------------
(Intercept) | 20.64 | 0.67 | [ 19.26, 22.01] | 30.76 | < .001
cyl [6] | -6.66 | 1.63 | [-10.00, -3.31] | -4.09 | < .001
cyl [8] | -10.54 | 1.96 | [-14.56, -6.52] | -5.38 | < .001
gear [1] | -0.94 | 1.09 | [ -3.18, 1.30] | -0.86 | 0.396
gear [2] | 0.38 | 1.11 | [ -1.90, 2.67] | 0.34 | 0.734
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
---
Code
print(out)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
------------------------------------------------------------------
(Intercept) | 15.83 | 1.24 | [13.28, 18.37] | 12.75 | < .001
cyl [8] | 0.00 | | | |
cyl [4] | 10.54 | 1.96 | [ 6.52, 14.56] | 5.38 | < .001
cyl [6] | 3.89 | 1.88 | [ 0.03, 7.75] | 2.07 | 0.049
gear [1] | -0.94 | 1.09 | [-3.18, 1.30] | -0.86 | 0.396
gear [2] | 0.38 | 1.11 | [-1.90, 2.67] | 0.34 | 0.734
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
---
Code
print(out)
Output
Parameter | Coefficient | SE | 95% CI | t(27) | p
------------------------------------------------------------------
(Intercept) | 14.89 | 0.92 | [13.00, 16.77] | 16.19 | < .001
cyl [8] | 0.00 | | | |
cyl [4] | 10.54 | 1.96 | [ 6.52, 14.56] | 5.38 | < .001
cyl [6] | 3.89 | 1.88 | [ 0.03, 7.75] | 2.07 | 0.049
gear [3] | 0.00 | | | |
gear [4] | 1.32 | 1.93 | [-2.63, 5.28] | 0.69 | 0.498
gear [5] | 1.50 | 1.85 | [-2.31, 5.31] | 0.81 | 0.426
Message
Uncertainty intervals (equal-tailed) and p-values (two-tailed) computed
using a Wald t-distribution approximation.
|
