pub fn uscereal() -> Result<DataFrame, PolarsError>Expand description
§Nutritional and Marketing Information on US Cereals
§Description:
The ‘UScereal’ data frame has 65 rows and 11 columns. The data come from the 1993 ASA Statistical Graphics Exposition, and are taken from the mandatory F&DA food label. The data have been normalized here to a portion of one American cup.
§Usage:
UScereal
§Format:
This data frame contains the following columns:
- ‘mfr’ Manufacturer, represented by its first initial: G=General Mills, K=Kelloggs, N=Nabisco, P=Post, Q=Quaker Oats, R=Ralston Purina.
- ‘calories’ number of calories in one portion.
- ‘protein’ grams of protein in one portion.
- ‘fat’ grams of fat in one portion.
- ‘sodium’ milligrams of sodium in one portion.
- ‘fibre’ grams of dietary fibre in one portion.
- ‘carbo’ grams of complex carbohydrates in one portion.
- ‘sugars’ grams of sugars in one portion.
- ‘shelf’ display shelf (1, 2, or 3, counting from the floor).
- ‘potassium’ grams of potassium.
- ‘vitamins’ vitamins and minerals (none, enriched, or 100%).
§Source:
The original data are available at http://lib.stat.cmu.edu/datasets/1993.expo/.
§References:
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S-PLUS. Fourth Edition. Springer.