- 1 What is the recode command in Stata?
- 2 What is the difference between recode and replace in Stata?
- 3 How do you recode missing values?
- 4 How do I reverse a variable in Stata?
- 5 How do I recode a different variable?
- 6 Can you undo a command in Stata?
- 7 What is exp required in Stata?
- 8 Can you run a regression with missing data Stata?
- 9 How do I delete missing values in Minitab?
- 10 How do you rename a variable in Stata?
- 11 What do you call a recoded variable in Stata?
- 12 Which is an example of the Stata command Egen?
- 13 How do you assign letter grades in Stata?
- 14 How many missing values are there in Stata?
What is the recode command in Stata?
recode changes the values of numeric variables according to the rules specified. Values that do not meet any of the conditions of the rules are left unchanged, unless an otherwise rule is specified.
What is the difference between recode and replace in Stata?
The replace command is more versatile than the recode command, but it requires more coding steps. There are five steps to using the replace statement. First, we generate a new variable, and usually set it equal to missing.
How do you recode missing values?
To recode missing values; or recode specific indicators that represent missing values, we can use normal subsetting and assignment operations. For example, we can recode missing values in vector x with the mean values in x by first subsetting the vector to identify NA s and then assign these elements a value.
How do I reverse a variable in Stata?
You will often need to recode values in your data for a number of reasons. For example, you may need to reverse-score items negatively-worded items on a measure. To do this via point and click, Go to Data -> Create or Change Data -> Other Variable Transformation Commands -> Recode Categorical Variable.
How do I recode a different variable?
Recoding into a different variable transforms an original variable into a new variable. That is, the changes do not overwrite the original variable; they are instead applied to a copy of the original variable under a new name. To recode into different variables, click Transform > Recode into Different Variables.
Can you undo a command in Stata?
It’s also very difficult to recover from mistakes—there’s no “undo” command in Stata. A do file contains the same commands you’d type in interactive Stata, but since they’re written in a permanent file they can be debugged or modified and then rerun at will.
What is exp required in Stata?
varlist required = exp required using required by() option required Certain commands require a varlist or another element of the language. The message specifies the required item that was missing from the command you gave. See the command’s syntax diagram.
Can you run a regression with missing data Stata?
Note: regression analysis in Stata drops all observations that have a missing value for any one of the variables used in the model. (This is knows as listwise deletion or complete case analysis). So a person who does not report their income level is included in model_3 but not in model_4.
How do I delete missing values in Minitab?
Get a Minitab file, or even comma-separated values, and everything feels fine….Remove missing values
- Choose Calc > Calculator.
- In Store Result in Variable, enter C3.
- In Expression, enter If(Left(C1,3)=”Low”, 99999999, C2).
- Click OK.
How do you rename a variable in Stata?
To address this problem Stata has the rename command. This command can be used to change the name of a variable to something else. You can use it to change variable names to all lower case, all upper case, or have the first letter of each variable name capitalised.
What do you call a recoded variable in Stata?
The recoded variable will be created as a new variable called grade. The Stata command egen, which stands for extended generation, is used to create variables that require some additional function in order to be generated.
Which is an example of the Stata command Egen?
The Stata command egen, which stands for extended generation, is used to create variables that require some additional function in order to be generated. Examples of these function include taking the mean, discretizing a continuous variable, and counting how many from a set of variables have missing values.
How do you assign letter grades in Stata?
Let’s now use recode to assign letter grades to ranges of the total score. For example the code (0/140=0 F) tells Stata to recode all values of total between 0 and 140 to 0, and then give the label “F” to the value 0.
How many missing values are there in Stata?
Stata allows us to code different types of numeric missing values. It has 27 numeric missing categories. “.a” to “.z” and “.“.