MIXED NOTATION FOR WINTER Flashcards
Ho
Null Hypothesis
n
sample size
x-bar
sample mean
s^2
sample variance
54321
5! Meaning
Outlier fences
Q1- 1.5IQR and Q3+1.5IQR
y-hat
predicted y
IQR
Q3-Q1
sigma^2
population variance
predicted y
y-hat
1/p
Expected first success?
p
pop proportion
sigma
population st. dev
Null Hypothesis
Ho
population st. dev
sigma
Expected number of successes?
np
population mean
mu
P(A) = P (A|B) and P(A)*P(B)=P(A and B)
two independence formulas
n! / r! n-r!
nCr formula
sample proportion
p-hat
y - yhat
Residual
2* root (pq/n)
ME for 1 prop (95% interval)
sample size
n
population variance
sigma^2
5! Meaning
54321
Alternative Hypothesis
Ha
difference of sample proportions
phat 1 - phat 2
SE for 1-mean inference
sigma/root n
p 1 - p 2
difference of population proportions (%)
sigma/root n
SE for 1-mean inference
np
Expected number of successes?
p-hat
sample proportion
sample mean
x-bar
Expected first success?
1/p
xbar 1 - xbar 2
difference of sample means
nCr formula
n! / r! n-r!
population size
N
sample variance
s^2
s
sample st. dev
phat 1 - phat 2
difference of sample proportions
ME for 1 mean (95% interval)
2* s/root n
root (pq/n)
SE for 1-proportion inference
Q3-Q1
IQR
mu 1 - mu 2
difference of population means
Ha
Alternative Hypothesis
2* s/root n
ME for 1 mean (95% interval)
Residual
y - yhat
SE for 1-proportion inference
root (pq/n)
two independence formulas
P(A) = P (A|B) and P(A)*P(B)=P(A and B)
ME for 1 prop (95% interval)
2* root (pq/n)
sample st. dev
s
Q1- 1.5IQR and Q3+1.5IQR
Outlier fences
difference of sample means
xbar 1 - xbar 2
difference of population means
mu 1 - mu 2
pop proportion
p
difference of population proportions (%)
p 1 - p 2
N
population size
mu
population mean