Many tests were run to check the relationship between GPS and all other variables but none of them were significant, for
example for the number of landmarks rs = .106 and p = .323, for the number of roads rs = .094 and p = .379 and for the
number of quarters rs = .026 and p = .806 (see Table 7).
Spearman correlation suggests that there is no significant relationship between GPS usage (combination of three scores
from three different questions: phone apps + GPS + using GPS) and completeness of maps specifically with rs = .096 and
p = .361.