Final Equations Flashcards
1
Q
Permutation
A
n!
____
(n-r)!
2
Q
Standard deviation
A
__________________
O=/ (X-m)^2 + infinity
/ __________________
V n
N= number of data points
3
Q
What are the standard deviation sections?
A
68%, 95%, 99.7%
4
Q
Exponential growth
A
A=Ao(1+r)^t/d
5
Q
Half life
A
A=Ao(1/2)^t/d
6
Q
Compound $ in a bank
A
A=Ao(1+r/m)^mt
7
Q
Compound continuously
A
A=Pe^rt
8
Q
What is:
A1+(n-1)d
A
Arithmetic
9
Q
What is:
A1
–––––
1-r
A
Infinite sequence
10
Q
What is:
A1(1-r^n)
––––––––––
1-r
A
Sum of geometric sequence
11
Q
What is:
A1•r^n-1
A
Geometric sequence
12
Q
What is:
n
–– (A1+An)
2
A
Sum of an arithmetic sequence
13
Q
Combination
A
n!
______
r!(n-r)!
