WINTER BREAK NOTATION REVIEW Flashcards
1
Q
population mean
A
mu
2
Q
sample mean
A
x-bar
3
Q
population st. dev
A
sigma
4
Q
sample st. dev
A
s
5
Q
Residual
A
y - yhat
6
Q
IQR
A
Q3-Q1
7
Q
pop proportion
A
p
8
Q
sample proportion
A
p-hat
9
Q
population variance
A
sigma^2
10
Q
sample variance
A
s^2
11
Q
predicted y
A
y-hat
12
Q
sample size
A
n
13
Q
population size
A
N
14
Q
difference of population means
A
mu 1 - mu 2
15
Q
difference of sample means
A
xbar 1 - xbar 2
16
Q
difference of population proportions (%)
A
p 1 - p 2
17
Q
difference of sample proportions
A
phat 1 - phat 2
18
Q
nCr formula
A
n! / r! n-r!
19
Q
5! Meaning
A
54321
20
Q
SE for 1-proportion inference
A
root (pq/n)
21
Q
SE for 1-mean inference
A
sigma/root n
22
Q
ME for 1 prop (95% interval)
A
2* root (pq/n)
23
Q
ME for 1 mean (95% interval)
A
2* s/root n
24
Q
Outlier fences
A
Q1- 1.5IQR and Q3+1.5IQR
25
Expected first success?
1/p
26
Expected number of successes?
np
27
two independence formulas
P(A) = P (A|B) and P(A)*P(B)=P(A and B)
28
Null Hypothesis
Ho
29
Alternative Hypothesis
Ha
30
mu
population mean
31
x-bar
sample mean
32
sigma
population st. dev
33
s
sample st. dev
34
y - yhat
Residual
35
Q3-Q1
IQR
36
p
pop proportion
37
p-hat
sample proportion
38
sigma^2
population variance
39
s^2
sample variance
40
y-hat
predicted y
41
n
sample size
42
N
population size
43
mu 1 - mu 2
difference of population means
44
xbar 1 - xbar 2
difference of sample means
45
p 1 - p 2
difference of population proportions (%)
46
phat 1 - phat 2
difference of sample proportions
47
n! / r! n-r!
nCr formula
48
5*4*3*2*1
5! Meaning
49
root (pq/n)
SE for 1-proportion inference
50
sigma/root n
SE for 1-mean inference
51
2* root (pq/n)
ME for 1 prop (95% interval)
52
2* s/root n
ME for 1 mean (95% interval)
53
Q1- 1.5IQR and Q3+1.5IQR
Outlier fences
54
1/p
Expected first success?
55
np
Expected number of successes?
56
P(A) = P (A|B) and P(A)*P(B)=P(A and B)
two independence formulas
57
Ho
Null Hypothesis
58
Ha
Alternative Hypothesis
