Abstract

1

1

  1.1. What is a scientific investigation?

1

  1.2. What is a data analysis?

2

  1.3. Exploratory phase

4

  1.4. Confirmatory phase

6

  1.5. Modelling

8

  1.6. Scientist and data analyst interaction

8

2. 2-way exploratory data analysis

10

  2.1. Exploratory data analysis

10

  2.2. Cluster analysis

16

  2.3. Exploratory factor analysis

18

3. Exploratory 2-way factor analisis

18

  3.1. Principal components analisis (PCA)

22

  3.2. Correspondence analisis

22

  3.3. Supplementary elements

27

4. Exploratory 3-way factor analisis

28

  4.1. Factor analysis on instrumental variables

28

  4.2. Mulri-occasion data analisis

29

  4.3. Compromise: intrastructure and trajectories

29

  4.4. The analisis of multiple tables

30

  4.5. Interstructure analisis of multiple tables

31

5. Conclusion

35

References

35