the ratio of the number of observations in a statistical category to the total number of observations
the number of occurrences within a given time period
the number of observations in a given statistical category
an unofficial association of people or groups
instrumentalists not including string players
bind or tie together, as with a band
a range of frequencies between two limits
a thin flat strip of flexible material that is worn around the body or one of the limbs (especially to decorate the body)
