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.
A data frame with 214 rows and 10 variables