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Page 202, Table 6.1
use "a:\table61.dta", clear rename col1 home rename col2 x rename col3 y tabstat x y, s(sum) display 164.7/154.5 gen diff = (y - x*1.066) list
. tabstat x y, s(sum)
stats | x y
---------+--------------------
sum | 154.5 164.7
------------------------------
display 164.7/154.5
1.0660194
gen diff = (y - x*1.066)
list
+------------------------------+
| home x y diff |
|------------------------------|
1. | 1 6.7 7.1 -.0421999 |
2. | 2 8.2 8.4 -.3412002 |
3. | 3 7.9 8.2 -.2214003 |
4. | 4 6.4 6.9 .0776 |
5. | 5 8.3 8.4 -.4478006 |
|------------------------------|
6. | 6 7.2 7.9 .2248003 |
7. | 7 6 6.5 .104 |
8. | 8 7.4 7.6 -.2884002 |
9. | 9 8.1 8.9 .2653992 |
10. | 10 9.3 9.9 -.0138006 |
|------------------------------|
11. | 11 8.2 9.1 .3588006 |
12. | 12 6.8 7.3 .0512 |
13. | 13 7.4 7.8 -.0883999 |
14. | 14 7.5 8.3 .3050002 |
15. | 15 8.3 8.9 .0521994 |
|------------------------------|
16. | 16 9.1 9.6 -.1006 |
17. | 17 8.6 8.7 -.4676006 |
18. | 18 7.9 8.8 .3786001 |
19. | 19 6.3 7 .2841998 |
20. | 20 8.9 9.4 -.0874 |
+------------------------------+
tabstat x y diff, s(n mean p50 sd)
stats | x y diff
---------+------------------------------
N | 20 20 20
mean | 7.725 8.235 .0001499
p50 | 7.9 8.35 .0186997
sd | .946948 .9571201 .2599956
----------------------------------------
Page 202, Figure 6.1
scatter y x, ylabel(6 8 10) xlabel(6.4(.8)8.8)
Page 204, at the top
tabstat x y, s(n mean sd)
stats | x y
---------+--------------------
N | 20 20
mean | 7.725 8.235
sd | .946948 .9571201
------------------------------
correlate x y
(obs=20)
| x y
-------------+------------------
x | 1.0000
y | 0.9664 1.0000
Page 205, Table 6.2
use "a:\table62.dta", clear rename col1 orange rename col2 y rename col3 x tabstat x y, s(sum) gen r = (.246/4.35)*x gen diff = y - r list orange y x diff
. tabstat x y, s(sum)
stats | x y
---------+--------------------
sum | 4.35 .246
------------------------------
gen r = (.246/4.35)*x
gen diff = y - r
list orange y x diff
+---------------------------------+
| orange y x diff |
|---------------------------------|
1. | 1 .021 .4 -.0016207 |
2. | 2 .03 .48 .0028552 |
3. | 3 .025 .43 .0006828 |
4. | 4 .022 .42 -.0017517 |
5. | 5 .033 .5 .0047241 |
|---------------------------------|
6. | 6 .027 .46 .0009862 |
7. | 7 .019 .39 -.0030552 |
8. | 8 .021 .41 -.0021862 |
9. | 9 .023 .42 -.0007517 |
10. | 10 .025 .44 .0001172 |
+---------------------------------+
tabstat y x diff, s(n mean p50 sd)
stats | y x diff
---------+------------------------------
N | 10 10 10
mean | .0246 .435 3.73e-10
p50 | .024 .425 -.0003172
sd | .0043767 .0353553 .0024105
----------------------------------------
Page 205, at the bottom
display (.246/4.35)*1800
101.7931
Figure 6.2, page 206
scatter y x, ylabel(.024 .032) xlabel(.4(.025).5)
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