Probability & Statistics Notes
0
Probability:
Permutations - An arrangement of objects where the ORDER OF SELECTION MATTERS!
E.g. Locker Code (is actually a permutation and not a combination, as order matters).
Use nPr button on your calculator!
Combinations - An arrangement of objects where the ORDER OF SELECTION DOES NOT MATTERS!
E.g. Lotto Numbers (doesn’t matter what order the number comes out).
Use nCr button on your calculator!
1
Permutations and Combinations
2019 Q1
2018 Q3
2
And/Or Rule
2019 Q1
3
2016 Q5
4
2015 Q8
5
[
Conditional Probability
2020 Q5
6
2014 Q8
7
Expected Value
2018 Q1
8
2016 Q6
9
2014 Q3
10
Independent and Mutually Exclusive
2020 Q5
11
2019 Q6
12
2016 Q5
2013 Q1
13
Binomial Distribution
2020 Q6
14
2012 Q4
15
The hardest part of this chapter is being to identify what type of probability
question it is and what formula to be using. Here are some questions which
contain a mix of all types of probability!
2020 Q5
16
2020 Q6
17
2019 Q6
18
2017 Q1
19
2017 Q8
(Continued on next page)
20
21
2015 Q1
22