1.3 The data: one qualitative, one quantitative variable

Consider the face-plant data (Wojcik et al. 1999) used in Exercise 30.11 of the textbook (shown here in Table 1.2).

The data file (ForwardFall.csv) can be downloaded in Sect. 11.

You can download the data, and follow the instructions.

TABLE 1.2: Lean-forward angles for older and younger women.
Younger women		Older women

29	34	18
32	27	15
34	32	23
31	28	13
33	27	12

References

Wojcik, Laura A., Darryl G. Thelen, Albert B. Schultz, James A. Ashton-Miller, and Neil B. Alexander. 1999. “Age and Gender Differences in Single-Step Recovery from a Forward Fall.” Journal of Gerentology 54A (1): M44–50.