Transcription of Data Preparation/Descriptive Statistics
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Data Preparation/Descriptive Statistics
data Preparation &. Descriptive Statistics (ver. ). Oscar Torres-Reyna data Consultant PU/DSS/OTR Basic definitions . For statistical analysis we think of data as a collection of different pieces of information or facts. These pieces of information are called variables. A variable is an identifiable piece of data containing one or more values. Those values can take the form of a number or text (which could be converted into number). In the table below variables var1 thru var5 are a collection of seven values, id' is the identifier for each observation. This dataset has information for seven cases (in this case people, but could also be states, countries, etc) grouped into five variables. id var1 var2 var3 var4 var5. 1 Yes Male 2 No Female 3 Yes Female 4 Yes Male 5 No Female 6 Yes Female 7 Yes Male PU/DSS/OTR.
extensions are *.txt for tab-separated data and *.prn for space-separated data. Any statistical package can read these formats. •Record form (or fixed). Data is structured by fixed blocks (for example, var1 in columns 1 to 5, var2 in column 6 to 8, etc). You will need a codebook and to write a program (either in Stata, SPSS or SAS) to read ...
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