Sigma Notation
Terminology
Central Tendencies
Conics
Bad Korean Jokes
100
n = [0, 4]; f(n) = n
What is 10?
100
This word describes a large group of interest. Example: all of the people in South Korea.
What is a "population"?
100
Find the range of the following data set: 2, 4, 5, 6, 8, 19, 22, 30, 35, 39.
What is 37?
100
2x² + y² - 4x + 4y = 0 is this type of conic.
What is an ellipse? (Vertically oriented)
100
Why aren't the girls satisfied with my bad Korean jokes?
Because they are 만족s.
200
n = [0, 6]; f(n) = 2n + 1
What is 49?
200
A group you select to represent a population in a study is called this. Example: the 2000 people participating in a survey on Korean people's height.
What is a "sample"?
200
In 2013, half of Korean households lived on less than the equivalent of $40,861 per year, while half lived on more than that. This central tendency would be used to measure that.
What is median?
200
When taking the parabola (x-4)² = 8y, where would the focus and directrix be?
Focus: (4, 2); Directrix: y = -2
200
Which part of Bucheon do people usually go on an impulse?
They go to 충동.
300
x = [0, 5]; f(x) = 2^x
What is 63?
300
The real value of a population average, which people do not usually know, is called this. Example: the real average height of all Korean people.
What is a "parameter"?
300
Find the mode of the following data set: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55.
The mode is 1.
300
What made the dog so individualistic?
It was a 개인.
400
n = [1, 100]; f(n) = n
What is 5,050?
400
An estimate of a parameter based on studying a sample is called this. Example: the average height of 2000 Korean people in a study.
What is a "statistic"?
400
(Sigma notation) r = [1, n]; f(r) = r^2; divide by n at the end. This would give you what central tendency?
The mean of the first "n" perfect squares.
400
What does the value of "c" tell you in an ellipse or hyperbola?
The distance between the center and either focus.
400
How do you remove a tie?
First, you 풀다 fabric, and then you just take it off.
500
n = [11, 110]; f(n) = n - 10
What is 5,050?
500
To test the validity of a study, you must first check whether there were enough people participating in the study. Example: in the study we are discussing, there were 2000 people.
What is a "sample size"?
500
Find the interquartile range (IQR) of the following set of test scores: 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
90 - 60 = 30
500
The conic described by (x-4)²/4 - (y-4)²/4 = 1 will be constrained by which asymptotes?
(1st) y = x (2nd) y = -x + 8
500
What major Korean company is dominant in the present?
현재.