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QS101 – Introduction to Quantitative Methods in Social ScienceWeek 2: Introduction to Stataand Preparation of Field WorkFlorian ReicheTeaching Fellow in Quantitative MethodsCourse Director, BA Politics and SociologyDeputy Director for Student Experience and Progression, PAISF.Reiche@warwick.ac.uk
The Route Today • Two Parts • Introduction to Stata • Preparation of Field Work
Resource Update http://www2.warwick.ac.uk/fac/cross_fac/q-step/currentstudents/qs101
Conventions • Normal Text • Stata commands
The First Screen Command History Output Variable List Command Line
What does a data set look like? edit Variables Observations
Naming Variables • Bad examples: q23, fubar, GenExp1 • Good examples: age, gender, etc. • No blanks • Start with a letter • Up to 10 characters • Lower case
Entering data 1 • Start with the following commands: • clear • edit
Edit / Browse Variable List Properties
Syntax • rename var1 id
Syntax again • rename var2 gender • label define sex 1 "Male" 2 "Female" • label values gender sex • If you want to look at an overview, type: codebook gender
Save the data set • File Save as .dta
Good to know • If you accidentally enter a letter, Stata turns the variable into a “string” variable • Simple remedy: • destring varlist, replace • e.g. destring id, replace
The Task • Topic: The Intro Week Experience • Conduct a small survey to assess how students assess the quality of intro week • N: ~10 • Design a questionnaire with about 10 questions • Interviews will be conducted next week
A Guide to Questionnaire Design • Conducting a Survey is complex • You will learn this later on during the degree • Here: • Purpose defined • Population: Students of Warwick Uni • Type: Face to Face
A Guide to Questionnaire Design (contd.) • Be clear about the focus of your research • Which issues do you want to assess? This will determine the focus of the questions you ask
A Guide to Questionnaire Design (contd.) • Decide on a particular sequence of questions • Prepare to tell people what the survey is about (intro statement) • Begin with interesting questions • More sensitive questions at the end (?) • In any case, sequence needs to be logical
How to ask questions • Avoid leading questions • Be short and sweet • No double negations, or double questions
A Guide to Questionnaire Design (contd.) • Open versus closed questions • Here: closed questions • Single versus multiple response • Here: Single response • Likert Scales • Very interesting, interesting, uninteresting, very uninteresting
Off you pop! • Come together in groups of 3 • Use the rest of the seminar to design your questionnaire • Work on the questionnaire until next week, and make sure it is ready (see homework) • Use literature! • Put in at least 3 hours!
Homework, seminar, week 3 • Ensure to have a finalised version of your questionnaire ready. • Make sufficient hard copies of the questionnaire to conduct individual interviews (unless you want to go digital).