How do I tabulate data in Stata?
Stata offers a variety of ways to tabulate data. The most basic table, table [variable], will show the variable and the frequencies of each category, like so. This can also be done with more than one categorical variable, table [variable1] [variable2] [variable 3] [variable etc].
How do I tabulate a single categorical variable in Excel?
The tabulate command, or just tab, creates tables of frequencies. To have it give you frequencies for a single categorical variable simply tell it which variable you want it to act on: This produces the following output:
How do I add statistics to a continuous variable in Stata?
If you start with a tab command and then add the sum () option, with the name of a continuous variable in the parentheses, Stata will add summary statistics for that variable to each cell of the table: Gives:
What is the difference between column and cell in Stata?
If we add the column (or col) option, Stata will tell us what percentage of the males are in each class and what percentage of the females are in each class: If we add the cell option, Stata will tell us what percentage each combination of class and sex is of the total sample.
What does tabulate command do in Stata?
tabulate produces a one-way table of frequency counts. For information on a two-way table of frequency counts along with measures of association, including the common Pearson χ2, the likelihood-ratio χ2, Cramér's V , Fisher's exact test, Goodman and Kruskal's gamma, and Kendall's τb, see [R] tabulate twoway.
Can you tabulate multiple variables in Stata?
In multiway tabulations, you can display frequencies across levels of two or more variables. You can have levels of one variable nested within levels of another variable in columns, in rows, or in both dimensions.
What is cross tabulation in Stata?
Cross Tabulation. A crosstabulation or a contingency table shows the relationship between two or more variables by recording the frequency of observations that have multiple characteristics. Crosstabulation tables show us a wealth of information on the relationship between the included variables.
What is a two-way tabulation?
Two-way tables are also known as contingency, cross-tabulation, or crosstab tables. The levels of one categorical variable are entered as the rows in the table and the levels of the other categorical variable are entered as the columns in the table.
How many variables can a cross tabulation include?
two variablesA cross-tabulation (or just crosstab) is a table that looks at the distribution of two variables simultaneously.
Can you make tables in Stata?
The table command can create many customized tables, ranging from simple one-way tabulations to multiple n-way tables with summary statistics and estimation results. table can compute and report frequencies, proportions, percentiles, and other summary statistics.
What is the frequency command in Stata?
In Stata, you can use the contract command to calculate frequency for variables and save your results into a new data set. The contract command takes that data and makes a new data set of frequencies and percentages.
How do you do a chi square in Stata?
0:584:06Pearson's chi-squared and Fisher's exact test in Stata® - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo the command is tabulate. And then the two variables are race and married the row variable is raceMoreSo the command is tabulate. And then the two variables are race and married the row variable is race the column variable is married. And we can see the cell counts.
What are the types of tabulation?
Types of TabulationSimple Tabulation or One-way Tabulation. When the data are tabulated to one aspect, it is declared to be a simple tabulation or one-way tabulation. ... Double Tabulation or Two-way Tabulation. ... Three-way Tabulation. ... Complex Tabulation. ... Direct Tally Method. ... Card Sort and Count Method. ... List and Tally Method.
What is a one-way tabulation?
One-way frequency refers to a tabulation of the data which only examines one categorical variable at a time. The Procedure FREQ can preform the tabulation of this simple structure, and produce tests for equal proportions across the categories.
What is a two way table in statistics?
What is a Two Way Table? A two way table is a way to display frequencies or relative frequencies for two categorical variables. One category is represented by rows and a second category is represented by columns.
How to add summary statistics in Stata?
If you start with a tab command and then add the sum () option, with the name of a continuous variable in the parentheses, Stata will add summary statistics for that variable to each cell of the table:
Where is the first variable in a table?
The first variable you list will be placed in rows and the second in columns. The table will usually be easier to read if the variable with the most unique values is listed first. On the other hand, if you're thinking of the two variables as a dependent variable and an independent variable, the dependent variable is usually listed first so it goes in the rows.
What does frequency tell you about two categorical variables?
For two categorical variables, frequencies tell you how many observations fall in each combination of the two categorical variables (like black women or hispanic men) and can give you a sense of the relationship between the two variables. These are examples of bivariate statistics, or statistics that describe the joint distribution ...
What does the mean tell you about a variable?
For a variable that describes quantities (like income) the mean tells you what the expected value of the variable is, and the standard deviation tells you how much it varies. However, the median and percentiles often give you a better sense of how the variable is distributed, especially for variables that are not symmetric (like income, which often has a few very high values). These are also univariate statistics.
What are categorical variables called?
Categorical variables are also sometimes called factor variables. Indicator variables (also called binary or dummy variables) are just categorical variables with two categories. Frequency tables for a single variable are sometimes called one-way tables.
What is the median of a quantitative variable?
Means are often called averages, and variance is just the standard deviation squared. The median is also the 50th percentile.
Can a quantitative variable be a categorical variable?
For a quantitative variable and two or more categorical variables, the the mean value of the quantitative variable for those observations in each combination of the categorical variables can give you a sense of how the variables are related just like they did with a quantitative variable and one categorical variable.
Why are full commands listed in Stata?
Many of the above commands have shorter versions that can be used to save space and time; full commands are listed because they are less confusing, but if you prefer the short versions type help table. This will also show you more options that Stata offers for constructing tables. Back to Tutorials.
How to look at a quick summary of data?
One of the most useful ways to look at a quick summary of data is by tabulating it. Stata offers a variety of ways to tabulate data. The most basic table, table [variable] , will show the variable and the frequencies of each category, like so.
What does tabdisp do?
What tabdisp does is to show the values of the cell variables for the first observation it finds within each category. However, because, by construction, all the values of freq and cumfreq are constant within each category of rep78 , tabdisp will find and show the values we want to be shown.
Can tabdisp be used without stata?
The purpose of the rest of this FAQ is to show that although tabdisp is often billed as a programmer's command, which is shown by the placement of the manual entry in the Programming Reference Manual, the command can be used without Stata programming knowledge.
