probability
likelihood that an event might happen
100%
sure thing
0%
impossible
theoretical
what SHOULD happen
experimental
what DID happen when the data was collected during an experiment or survey
outcomes
# of possible ways a thing can happen
independent
the first event does NOT affect the second event, WITH replacement, same number of outcomes each time
dependent
the first event DOES affect the second event, the # of outcomes decreases each time; withOUT replacement
permutation
order IS important, place, 1st, second, bronze medal, position...
combination
order is NOT important-divide out the duplicates
prime
only 1 and itself as factors, ex: 2, 3, 5, 7, 11, 13
composite
has more than 1 and itself as factors: ex: 4,6,8,9,10, 12
even
divisible by 2, ends in 0,2,4,6 0r 8
odd
not divisible by 2; ends in 1, 3, 5, 7, or 9
vowel
a, e, i, o, or u
consonents
NOT vowels, the other 21 letters of the alphabet