def waistHists():
pantdic = loadNumeric()
waists = set([x['waist'] for x in pantdic.values()])
for waist in waists:
pants = loadNumeric(waist = waist)
if len(pants.values()) < 3:
continue
stdstats(pants)
def covstats():
pantdic = loadNumeric()
cmat = []
for field in numerical:
inmat = []
for pant in pantdic.values():
inmat.append(pant[field])
cmat.append(inmat)
print cov(array(cmat))
