Example: Characteristics of Hardware
To explore how multiple correspondence analysis works, you will use data from Hartigan 1, which can be found in screws.sav. See the topic Sample Files for more information. This dataset contains information on the characteristics of screws, bolts, nuts, and tacks. The following table shows the variables, along with their variable labels, and the value labels assigned to the categories of each variable in the Hartigan hardware dataset.
| Variable name | Variable label | Value label |
|---|---|---|
| thread | Thread | Yes_Thread, No_Thread |
| head | Head form | Flat, Cup, Cone, Round, Cylinder |
| indhead | Indentation of head | None, Star, Slit |
| bottom | Bottom shape | sharp, flat |
| length | Length in half inches | 1/2_in, 1_in, 1_1/2_ in, 2_in, 2_1/2_in |
| brass | Brass | Yes_Br, Not_Br |
| object | Object | tack, nail1, nail2, nail3, nail4, nail5, nail6, nail7, nail8, screw1, screw2, screw3, screw4, screw5, bolt1, bolt2, bolt3, bolt4, bolt5, bolt6, tack1, tack2, nailb, screwb |
1
Hartigan, J. A. 1975. Clustering algorithms. New York: John Wiley and
Sons.