problems installing SPSS? ◦ Book an appointment for office hour (Thursday, 12.30 - 1.20) ◦ Tech problem? Email cmnstech@sfu.ca No extensions for technical problems after Lab 3 assignment.
SPSS project file we were working on last week. If you do not have a saved copy: ▪ Go to Canvas ◦ Assignments > SPSS Lab 3 - Variables recoding ◦ Download the Week-3.sav file ▪ Open the file on SPSS ◦ Launch SPP ▪ File > Open > Data… ▪ Find and open the Week-3.sav file
Sometime we do not need the maximum level of detail. In these cases, reducing the measurement level facilitates the management of data and the analysis of results. Examples of measurement-level reductions: • Age. From Scale (x years) to Ordinal ◦ children [0-12 yrs], teens [13-19], young adult [20-29], adult [30-49], seniors [49+] • Income. From Ordinal: ◦ $0 - $4999, $5000 - $9,999, $10,000 - $14,999, $15,000 - $19,999, $20,000 - $24,999, $25,000 - $29,000 to Nominal: ◦ Below poverty line (0 - $14,999), Above poverty line ($15,000 and above)
• Larghetto – rather slow and broad (60–65 bpm) • Adagio – slow with great expression (66–75 bpm) • Andante – at a walking pace (76–107 bpm) • Moderato – at a moderate speed (108–119 bpm) • Allegro – fast, quick, and bright (120–155 bpm) • Vivace – lively and fast (156–175 bpm) • Presto – very, very fast (176+ bpm) Scale Ordinal
variable Popularity into a new nominal variable names “Popularity_new” • If popularity is below 75, then the new variable value is “Popular” • If popularity is 76 or above, then the new variable value is “Super popular” To begin, click on Transform > Recode into different variable.
variable name and add descriptive label 3: click change 4: click Old and New Values 5: set your range 6: tick the checkbox and define width 15 7: define the new variable value for the range 8: click add and repeat steps 5-7-8 for the second range. 10: click OK 9: once defined all ranges, click Continue
back to the Data View. Your new variable will be the last one on the right. • Drag and drop the new variable next to the original Popularity • Sort the original popularity Ascending (right click on the column header > “Sort Ascending”) • Scroll to popularity = 75 to check if the new variable is correctly recoded • Take a screenshot of the dataset showing that the new Popularity variable correctly changes value when old popularity is above 75 • Upload on Canvas
your project. 2. SPSS project files have the .sav extension. Your saved project includes the data (which means, no need to re-import the dataset next time) and all recoded variables.
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