Contains measurements 214 observations of 6 types of glass; defined in terms of their oxide content.
- Type
has 6 types of glasses
- X1
refractive index
- X2
Sodium (unit measurement: weight percent in corresponding oxide).
- X3
Magnesium
- X4
Aluminum
- X5
Silicon
- X6
Potassium
- X7
Calcium
- X8
Barium
- X9
Iron
Usage
data(glass)