The number of standard deviations the observation falls from the mean.
100
True/false? If you flip 2 coins, the probability that both are heads is:
P(first coin heads) + P(second coin heads)
False.
100
What is a simple random sample? Give an example.
No rhyme or reason as to how you sample.
Example: going around asking people
100
What is Caroline's major?
Economics
200
What does the second vertical line in a box plot represent?
Q1
200
What is the formula for a z score?
(observation - mean) / std dev
200
What is the probability of getting "tails" 4 times in a tow
1/16 = 0.0625
200
Which are the explanatory and response variables?
-whether or not you make bad decisions at Deep Roots
-how many drinks you consume
Drinks = explanatory
Bad decisions = response
200
How many seasons of the show "Friends" are there?
10.
300
True/false. The middle line represents the mean.
False
300
How do you know if an observation is an outlier?
If the z score is > 3.
300
There are 2 open seats in musical chairs and 7 players. How many combinations are there?
21.
300
Why do people typically conduct observational studies rather than experimental studies?
Because it's expensive and time consuming to conduct studies. Sometimes experimenting on people is not ethical.
300
How much does a margarita cost at Gringos?
$3.50
Also, who is going to buy me one?
400
In the picture Caroline will draw on the board, what is the inner quartile range?
15
400
Mean = 2
Std Dev = 1.2
Obs = 7
Is 7 an outlier?
Yes.
400
El Tequila is giving away 4 free daiquiris. There are 4 different sizes. If 20 people want the daiquiris, how many different possible combinations are there?
116,280.
400
What is a cluster random sample? Give an example.
Separate the population into groups and choose an entire group to sample.
400
Who won Project Runway this season?
Dom.
500
Draw a box & whisker with the following data:
1, 1, 2, 3, 4, 5, 5, 6, 7, 10, 26
The picture.
500
Mean = 10
Std Dev = 2
Obs = 8.5
What is the z score?
0.8
500
There are two tickets for a Michael Buble concert. 5 people want to go. What is the probability that Caroline gets to go?
2/5 = 40%
500
What is a lurking variable? Give an example.
Something that could have caused your outcome that wasn't part of your study.
500
What is the name of the plastic piece at the tip of a shoelace?