MARK205 Lecture Notes - Lecture 8: List Of Statistical Packages, Data Analysis, Data Quality
Document Summary
What to look for in raw data inspection. If possible, standard codes should be used for missing data (e. g. 99). Coding of structured questions is relatively simple, since the response options are predetermined (e. g. 1=strongly disagree, 2=disagree,4=agree,5=strongly disagree). Att(cid:1005), att(cid:1006) ge(cid:374)der, age et(cid:272): the code numbers associated with each possible response to each question, e. g. under 18=1, 18-24=2, 25 and above=3 etc. Using spss for data analysis: the statistical package for the social sciences. Spss is a cross between a spreadsheet and a database. It is a very powerful program: most people only use a fraction of its capabilities. Spss can be used for: storing data, analysing data, presenting data. Need to tell sps what the values mean: The status of a product is irrelevant to me: 1 needs to become a 5, 5 needs to become a 1, 2 needs to become a 4, 4 needs to become a 2, 3 stays the same.
