对X52 X53 X54 X55 X61 X62 X63 X64 X65 X66 X67进行归一化的stata代码

以下是对X52 X53 X54 X55 X61 X62 X63 X64 X65 X66 X67进行归一化的Stata代码：

* 定义变量的最小值和最大值
local min_x52 = r(min) if var == "X52"
local max_x52 = r(max) if var == "X52"
local min_x53 = r(min) if var == "X53"
local max_x53 = r(max) if var == "X53"
local min_x54 = r(min) if var == "X54"
local max_x54 = r(max) if var == "X54"
local min_x55 = r(min) if var == "X55"
local max_x55 = r(max) if var == "X55"
local min_x61 = r(min) if var == "X61"
local max_x61 = r(max) if var == "X61"
local min_x62 = r(min) if var == "X62"
local max_x62 = r(max) if var == "X62"
local min_x63 = r(min) if var == "X63"
local max_x63 = r(max) if var == "X63"
local min_x64 = r(min) if var == "X64"
local max_x64 = r(max) if var == "X64"
local min_x65 = r(min) if var == "X65"
local max_x65 = r(max) if var == "X65"
local min_x66 = r(min) if var == "X66"
local max_x66 = r(max) if var == "X66"
local min_x67 = r(min) if var == "X67"
local max_x67 = r(max) if var == "X67"

* 进行归一化
replace X52 = (X52 - `min_x52') / (`max_x52' - `min_x52') if var == "X52"
replace X53 = (X53 - `min_x53') / (`max_x53' - `min_x53') if var == "X53"
replace X54 = (X54 - `min_x54') / (`max_x54' - `min_x54') if var == "X54"
replace X55 = (X55 - `min_x55') / (`max_x55' - `min_x55') if var == "X55"
replace X61 = (X61 - `min_x61') / (`max_x61' - `min_x61') if var == "X61"
replace X62 = (X62 - `min_x62') / (`max_x62' - `min_x62') if var == "X62"
replace X63 = (X63 - `min_x63') / (`max_x63' - `min_x63') if var == "X63"
replace X64 = (X64 - `min_x64') / (`max_x64' - `min_x64') if var == "X64"
replace X65 = (X65 - `min_x65') / (`max_x65' - `min_x65') if var == "X65"
replace X66 = (X66 - `min_x66') / (`max_x66' - `min_x66') if var == "X66"
replace X67 = (X67 - `min_x67') / (`max_x67' - `min_x67') if var == "X67"

这个代码与之前的代码非常相似，只是变量名不同。请注意，这个代码假定你的变量名是X52、X53、X54、X55、X61、X62、X63、X64、X65、X66和X67。如果你的变量名不同，你需要相应地修改代码。