Spss Tutorial 3

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Spss Tutorial 3

  1. 1. Research methods SPSS Tutorial
  2. 2. Correlation <ul><li>Enter the following data into SPSS </li></ul><ul><li>The study looks at whether the number </li></ul><ul><li>of pets a person has is related to their age </li></ul><ul><li>Don’t forget to label the variables </li></ul><ul><li>(see lecture notes) </li></ul><ul><li>Carry out a Spearman’s test and report </li></ul><ul><li>findings </li></ul><ul><li>Draw a scatter plot of the data </li></ul><ul><li>Is there a relationship between age and </li></ul><ul><li>number of pets? </li></ul>
  3. 3. Data analysis <ul><li>Spearman’s results </li></ul>Rho value P value (significance) Number of participants
  4. 4. Scatter plot <ul><li>Scatter plot </li></ul>
  5. 5. 2 x 2 Chi Squared test <ul><li>Enter the following data into SPSS </li></ul><ul><li>120 people (60-male, 60-female) were asked whether they preferred dramas, comedies or action films. </li></ul><ul><li>Carry out a chi-squared analysis to find out if there are differences in the types of films that men and women liked. </li></ul>
  6. 6. Data analysis <ul><li>First, weight cases by frequency </li></ul>
  7. 7. Data analysis <ul><li>This table shows expected and observed frequencies </li></ul><ul><li>The chi-squared test shows that there is a significant difference in the types of films that men and women enjoy </li></ul>
  8. 8. Mann-Whitney <ul><li>Enter the following data into SPSS </li></ul><ul><li>This study looks at number of aggressive </li></ul><ul><li>acts carried out by hand reared (1) vs </li></ul><ul><li>dam-reared (2) dogs </li></ul><ul><li>Don’t forget to label the variables </li></ul><ul><li>(see lecture notes) </li></ul><ul><li>Carry out a Mann-Whitney test </li></ul><ul><li>and report findings </li></ul><ul><li>Which rearing method seems best? </li></ul>
  9. 9. Data Analysis <ul><li>Mann Whitney results </li></ul>Mann Whitney U statistic P value (significance) Mean Ranks
  10. 10. Wilcoxon test <ul><li>20 aggressive dogs were measured </li></ul><ul><li>for number of aggressive outbursts </li></ul><ul><li>before and after training. </li></ul><ul><li>Enter the following data into SPSS </li></ul><ul><li>Don’t forget data labels </li></ul><ul><li>Carry out a Wilcoxon analysis & </li></ul><ul><li>report findings </li></ul><ul><li>Did the training have an effect </li></ul><ul><li>on aggression? </li></ul>
  11. 11. Data analysis <ul><li>Wilcoxon results </li></ul>Wilcoxon statistic P value (significance)
  12. 12. Kruskal-Wallis test <ul><li>Horses are often reared in one of three different ways </li></ul><ul><li>In isolation </li></ul><ul><li>With some limited access to social group </li></ul><ul><li>With full social group contact </li></ul><ul><li>The following study examined the amount of time spent engaged in play behaviour (as a proportion of total ethogram behaviour) for horses from each group </li></ul>
  13. 13. Kruskal-Wallis test <ul><li>Enter the following data into SPSS </li></ul><ul><li>Don’t forget data labels </li></ul><ul><li>Carry out a Kruskal-Walis test & </li></ul><ul><li>report findings </li></ul><ul><li>Did rearing method have an effect on </li></ul><ul><li>play behaviour? </li></ul>
  14. 14. Kruskal Wallis analysis <ul><li>Data </li></ul>Kruskal Wallis statistic P value (significance)
  15. 15. Friedman test <ul><li>There is evidence that pets can lower depression in people diagnosed with the disorder. </li></ul><ul><li>A group of depressed individuals were asked to fill in a depression inventory </li></ul><ul><li>They then spent some time with horses. </li></ul><ul><li>They were then asked to fill in a further depression inventory to assess levels of depression after the exposure, and a follow-up after 2-months </li></ul>
  16. 16. Friedman test <ul><li>Enter the data into SPSS </li></ul><ul><li>Don’t forget data labels </li></ul><ul><li>Carry out a Friedman analysis & </li></ul><ul><li>report findings </li></ul><ul><li>Did the exposure have an effect on </li></ul><ul><li>depression scores? </li></ul>
  17. 17. Data Analysis <ul><li>Freidman results </li></ul>Friedman statistic P value (significance)

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