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2016-07-13 · Stata for Students: Descriptive Statistics. This article is part of the Stata for Students series. If you are new to Stata we strongly recommend reading all the articles in the Stata Basics section. Descriptive statistics give you a basic understanding one or more variables and how they relate to each other.

* distinct households egen tag_hh = tag(hhid) count if tag_hh local n_hh = r(N) egen tag = tag(hhid s11211) bysort s11211 tag: gen freq = _N gen mean = string(freq/`n_hh', "%4.3f") tabdisp s11211 if tag, c(freq mean) ----- s11211 | freq mean -----+----- Buyer | 7 0.117 Collection trader | 16 0.267 Cooperative | 15 0.250 Market | 3 0.050 Middlemen | 6 0.100 Processing plant in town | 1 0.017 SHG | 1 0.017 Target crops are not sold. | 1 0.017 Trader | 19 0.317 VFC | 6 0.100 ----- In the dataset, the variable id is the unique case identifier. To add the duplicate observations, we sort the data by id, then duplicate the first five observations (id = 1 to 5). This leads to 195 unique and 5 duplicated observations in the dataset.

stata – Oscar Kjellberg

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duplicates tag gvkey datadate, ge(dup). 2013年10月18日 stata SPSS Number of unique values of num is 9 这个，还可以用： duplicates tag A,gen(tag) 生成的tag就是重复值的个数，若显示为0意思 Stata is a good tool for cleaning and manipulating data, regardless of the first line of command creates a variable (meanbmi) which takes on a unique value for Stata Fuzzy match command * This command checks if two strings match up. Use this tag for all fuzzy concepts, such as fuzzy sets, fuzzy clustering, fuzzy Determining the number of distinct values a categorical variable has is crit Stata tips. Useful commands for data management in Stata. 1. How to drop Here I create a local containing all the unique elements of the variable levels. The Stata command isid idvar , where idvar is the ID variable, tests for both the typically ensures that no observation has two distinct ID variable values.
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Number of unique values of mpg is 21. Looking at the help of the command, it does not seem possible to store this value. Starting with Stata 8, the duplicates command provides a way to report on, give examples of, list, browse, tag, or drop duplicate observations. This FAQ is likely only of interest to users of previous versions of Stata.

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STATA – SPSS-AKUTEN

This article is part of the Stata for Students series. If you are new to Stata we strongly recommend reading all the articles in the Stata Basics section.

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I applied the following command in egen unique=tag(sicff49 month) by sicff49 (month), sort: gen Faster Stata for Big Data. including: collapse, reshape, xtile, tabstat, isid, egen, pctile, winsor, contract, levelsof, duplicates, unique/distinct, and more. This document briefly summarizes Stata commands useful in ECON-4570 varlist See summary information separately for each group of unique egen useIt = tag(state year) A variable equal to 1 in a single observation for each state- yea 4 Jan 2016 before a command, Stata will first break up the data set up into one group for each value of the by variable (or each unique combination of the First, we read in that dataset, sort by that variable, and then we tag the first observation within each distinct group. . sysuse auto, clear . by rep78, sort: gen nvals = This is an updated version of Michal McMahon's Stata notes. To avoid this problem we can specify a new variable that will be a unique cluster identifier again: Tags can take two forms, either a tag applies to all text that fol Next, tag the unique ID variables (HHI2_UID) for all household members.