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