Thursday 14 December 2017 photo 5/15
|
Select subsample stata manual: >> http://zmm.cloudz.pw/download?file=select+subsample+stata+manual << (Download)
Select subsample stata manual: >> http://zmm.cloudz.pw/read?file=select+subsample+stata+manual << (Read Online)
stata drop if not equal to
stata keep if
stata select subset of observations
stata filter
stata anymatch
stata keep variables
stata inlist example
stata run regression on subset of data
If the sample is to be taken without replacement, then each observation from the dataset may appear in the sample not at all or once. The rest of this FAQ is based on the assumption that you are sampling without replacement and that the number of observations in memory is large enough for you to choose one or more
How do I select a subset of observations using a complicated criterion? I have a dataset, and I wish to work with a subset of observations, and that subset is defined by a complicated criterion. (This might be a long list of identifiers or some other codes specifying which
Once you have started Stata, you will see a large black window that is surrounded by a number of smaller white windows. In this tutorial we assume we are saving onto the A drive. Be sure to make the appropriate edits in . if: lets you select a subset of observations (e.g., list if radius >= 3000) infile: read non-Stata-format
27 Nov 2012 LONGITUDINAL-DATA/PANEL-DATA. REFERENCE MANUAL. RELEASE 13. ®. A Stata Press Publication. StataCorp LP. College Station, Texas .. [PSS]. Stata Power and Sample-Size Reference Manual. [P] . In many of the entries in [XT], we will use data from a subsample of the NLSY data (Center for.
Filter Observations: Filters the observations visible in the Data Editor. This button is selected variable. • Sort Data to sort the dataset by the selected variable. • Value Labels to access a submenu for managing and displaying value labels. • Keep Only .. for using the Data Editor and its documentation trail. We will also
Hence, taking a random sample of the data would be desirable. There are two commands in Stata that can be used to take a random sample of your data set. Use the sample command to draw a sample without replacement, meaning that once an observation (i.e., case, element) has been selected into the sample, it is not
That is, all observations with group equal to 1 will go in the first part dataset, and so forth. Here are two ways of doing that, both of which can be used interactively: use main preserve foreach i of num 1/7 { keep if group == `i' save group`i' restore, preserve } use main preserve forval i = 1/7 { keep if group == `i' save group`i'
29 Jun 2012
6 Apr 2013 Warning: drop and keep are not reversible. Once you have eliminated observations, you cannot read them back in again. You would need to go back to the original dataset and read it in again. Instead of applying drop or keep for a subset analysis, consider using if or in to select subsets temporarily. This is
By default Stata commands operate on all observations of the current dataset; the if and in keywords on a command can be used to limit the analysis on a selection of observations (filter observations for analysis). if Keyword (condition). if="logical"_expression (a logical expression of any complexity)
Annons