orange.def incom price quant year advert Obs: Annual 1910-1959 incom = real per capita income in thousands of dollars price = the real price per box in dollars quant = per capita boxes of oranges sold year = year advert = real per capita advertising expenditures (in cents) Data Source: Nerlove and Waugh (1961) and considered further by Berndt (1991). Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- incom | 50 1.02246 .2692552 .636 1.502 price | 50 2.65488 1.0427 1.301 5.842 quant | 50 .4529 .2116903 .114 .771 year | 50 1934.5 14.57738 1910 1959 advert | 50 1.305354 .7218712 .1383 2.7034