USA's 2004 harvested wheat surface by state
A data frame with 30 observations on the following 2 variables.
a factor with levels AR
, CA
,
CO
, DE
, GA
, ID
, IL
, IN
, KS
,
KY
, MD
, MI
, MO
, MS
, MT
, NC
,
NE
, NY
, OH
, OK
, OR
, Other
,
PA
, SC
, SD
, TN
, TX
, VA
, WA
,
and WI
wheat surface area measured in 1000s of acres
Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.
with(data = wheatUSA2004, hist(ACRES))