I Don't
n≤.1N
What is the 10% Condition?
Average distance from the mean
What is the standard deviation?
(x-μ)/σ
What is the z-score formula?
Returns the probability of x falling between two values on a normal curve.
What does normCdf do?
1.5xIQR
How are outliers found when you got that box and whisker plot type thing?
np≥10
n(1-p)≥10
What is the Large Counts Condition (for a normal distribution)?
A number that describes a population.
What is a parameter?
∑((Observed – Expected)2/Expected)
What is the formula for χ2?
The way Penny's last name is spelled
What is S-m-e-l-t-z-e-r?
Random spread of residuals
How do I tell if my linear model is correct?
This condition just needs to be stated.
How is the random condition fulfilled?
Measures how many standard deviations away from the mean a value is.
What is a z-score?
When the population standard deviation is known.
When is a z test statistic used?
Returns the probability of a X ≤ x, for a binomial distribution.
What does binomCdf do?
Direction
Unusual points
Form
Strength
What needs to be addressed when describing a relationship between 2 quantitative variables?
The CLT
What says the sample mean distribution is approximately normal if the sample size is big enough?
A point far away from x̄.
What is a high leverage point?
When the population standard deviation is not known.
When is a t test statistic used?
Returns x̄, σ, n, Q1, the median, Q3, and more.
What does 1-var stats do?
b=r(sx/sy)
What is the slope of a least squares regression line?
The Large Counts Condition for χ2 distributions.
What is "all expected counts must be equal to or greater than 5"?
The default, or original, claim
What is the null hypothesis?
P(X=x)=(1-p)x-1p
What is the formula for a geometric distribution?
When do I use a 2-samp t test?
Blinkin' winker
What does Penny call a cursor on the TI-84?