Acronyms/content for AP Stats Exam

What acronym do you use to describe or compare a distribution?

SOCS + context

What does SOCS stand for?

Shape

Outliers

Center

Spread

What acronym do you use to describe a relationship from a scatter plot (2 variables)?

DUFS + context

What does DUFS stand for?

Direction (positive or negative)

Unusual Features (outliers or clusters)

Form (linear or nonlinear)

Strength (weak, moderate, strong)

What acronym do you use to identify if a distribution is binomial?

BINS

What does BINS stand for?

Binary

Independent

Number of trials fixed

Some probability

What acronym do you use to describe a binomial distribution?

SCV

What does SCV stand for?

Shape

Center (mean = np)

Variability (SD = sqrt np(1-p) )

What is the formula for z score?

Z = (X - μ) / σ

This type of distribution represents only sample.

sample distribution

This type of distribution represents many samples.

sampling distribution

What makes a good statistic?

low bias and low variability