Probability Basics
What are two other ways to express a probabilty of 50%?
1/2 and .5 or judge's discretion
True or False: A zero scores measures how heavy something is.
It measures it's weirdness
What is n?
sample size
What are the two main types of variables?
numerical and categorical
Who sings "Poker Face"?
Lady Gaga
If the probablity of picking a blue marble is 18%, what is the probability of NOT picking a blue marble?
82% (100 - 18)
What is the z score formula?
(x - xbar)/s
What is s?
Standard Deviation
Correlation does not prove ____________
causation
Which band does Ms. Stauffer hate?
The Beatles
The Red Hot Chili Peppers
The Beastie Boys
TRHCP
What are the chances of rolling a one, then a two on a 6-sided die?
1/36 or about 3%
Can a z score be negative? If so, what would that mean?
Yes - it means the data point is below average;
What is x-bar?
mean or average
What is the statistic for "weirdness?"
What is the periodic table symbol for mercury?
Hg
What the probablity of flipping a coin and getting 8 Heads in a row?
.004 or 0.4%
Given N(50, 12). Find the z-score of a score of 60. Round to two decimal places.
.83
What does b stand for in the quadratic formula?
The coefficient of the "x" term.
The two types of numerical variables are discrete and ___________________
continuous
What is ichthyology?
The study of fish
What is the probability of a having a z score under -2?
2.5%
Why is it impossible to find the z-score of favorite color?
Favorite color is categorical and z-score is for numberical variables.
What is the symbol for angular momentum?
L
Which of these cannot be negative?
Correlation coefficient
Probability
z-score
Probablity
Explain to a 6th grade what "pi" is? (Hint: you must talk about a circle)
How many diameters wrap around a circle. (Or teacher's discretion)