itsp

```
black
variable:group
```

Variable Graph Type N Descriptives Label

[+] black
@unionT.dta

dummy
(byte)

26200
(2)

"0", "1"

race black

All properties
key	content
N	26200
N_unique	2
class	dummy
freq	19007, 7193
label	race black
max	1
mean	0.275
min	0
names	"0", "1"
sd	0.446
type	byte
values	0, 1

Data Manipulations with black
file	#	command

Script Output


black:  race black                              Number of Observations
------------------                          ------------------------------
                                            Total   Integers   Nonintegers
|  #                         Negative           -         -          -
|  #                         Zero           19007     19007          -
|  #                         Positive        7193      7193          -
|  #                                        -----     -----      -----
|  #   #                     Total          26200     26200          -
|  #   #                     Missing            -
+----------------------                     -----
0                     1                     26200
   (2 unique values)

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
       black |     26200     .274542    .4462917          0          1
@mean     0.275
@sd     0.446
@min         0
@max         1
@values 0, 1
@names "0", "1"
@freq 19007, 7193
@type byte
@label race black
@class dummy
@N_unique 2
@N 26200

[+] black
@wagepan.dta

dummy
(byte)

4360
(2)

"0", "1"

=1 if black

All properties
key	content
N	4360
N_unique	2
class	dummy
freq	3856, 504
label	=1 if black
max	1
mean	0.116
min	0
names	"0", "1"
sd	0.320
type	byte
values	0, 1

file # command

ch9.06.do:

14 [+]

regress lwage educ lhours black hisp if year == `y'

18 [+]

regress lwage educ exper expersq lhours black hisp if year == `y'

Data Manipulations with black
file	#	command

Script Output


black:  =1 if black                             Number of Observations
-------------------                         ------------------------------
                                            Total   Integers   Nonintegers
|  #                         Negative           -         -          -
|  #                         Zero            3856      3856          -
|  #                         Positive         504       504          -
|  #                                        -----     -----      -----
|  #                         Total           4360      4360          -
|  #   .                     Missing            -
+----------------------                     -----
0                     1                      4360
   (2 unique values)

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
       black |      4360    .1155963    .3197769          0          1
@mean     0.116
@sd     0.320
@min         0
@max         1
@values 0, 1
@names "0", "1"
@freq 3856, 504
@type byte
@label =1 if black
@class dummy
@N_unique 2
@N 4360

file # command

ch2.0.do:

122 [+]

histogram medagebrack , discrete frequency /// lcolor(black) fcolor(gs15) addlabels /// addlabopts(mlabposition(6)) xtitle(Upper limits of median age) /// title(Northeast and North Central States: Median Age)

ch9.06.do:

14 [+]

regress lwage educ lhours black hisp if year == `y'

18 [+]

regress lwage educ exper expersq lhours black hisp if year == `y'

Variable black

Script Output

Script Output