Set Properties Flashcards
review
What is the Average formula?
average=sum of terms
number of terms
Define Median
arrange sequence in ascending order (smallest to largest): it is the middle number or the average of the 2 middle numbers
Define Mode
Number that appears most frequently (there can also be two modes or none)
How do you find Range
Subtract the smallest from the largest value
What is standard deviation
how ‘spread out’ the numbers are
what is the probability formula?
of total possible outcomes
p(desired outcomes)=
#of desired outcomes
what constitutues mutually exclusive events?
when the possibility of one event excludes the other
mutually exclusive events probabiliy formula
probability that either will occur is p(a)+p(b)
What constitutes Independent Events?
Ask: Can both events occur together?
i.e. multiple coin flips, dice rolls, items out of a bag, weather in different cities
Independent Event probability formula?
p(a) x p(b)
At least one Independent Event Formula
p(a) +p(b) - p(axb)
Not Probability Formula
p(A)=1-p(notA)
What is the triangle inequality theorum?
In any triangle, the length of any one side must be shorter than the sum of the other two sides, and must be longer than the difference between those two sides.
Ex: if one side is 3 and one is 8 the third side must be between 5-11 NOT INCLUSIVE (6,7,8,9,10)
Define Permutation
One of the possible arrangements of a given set of elements
Define Combinations
The number of distinct groups of a certain size you can pull out of a larger group
