Making Change
Measure that Gerrymander!
Describing Data
A Stroll Through Graphs
The Beautiful Borda Count
100
Doubling my return rate on an investment.
What is a 100% increase?
100
The number of years between each U.S. Census.
What is 10?
100
This type of graph is useful for representing data as a fraction of a whole.
What is a pie chart?
100
The walk v3 on the graph below.
What is a closed walk?
100
This is the number of points awarded to a last-choice candidate in a ballot using the Borda count.
What is 1?
200
Halving the number of courses required for a major.
What is a 50% decrease?
200
The names of two strategies for gerrymandering a map.
What are cracking and packing?
200
Video recordings, journal entries, or photographs are all examples of this kind of data.
What is qualitative?
200
The walk v1x1v2x2v1 on the graph below.
What is a cycle?
200
This is the maximum number of points a candidate could receive in a 5 candidate race with 100 voters.
What is 500 points?
300
Quadrupling the price of a candy bar.
What is a 300% increase?
300
The two kinds of ways one can "waste" their vote, according to the efficiency gap.
What are:
1. voting for the losing candidate
2. casting a vote for the winner over the 50% threshold
300
The reason this graph can be characterized as misleading.
What is going against color convention?
300
The walk x2x4x3 on the graph below.
What is a Hamiltonian cycle?
300
In a modified Borda count, this is a reason that a candidate might go unranked.
What is: lack of knowledge about voting options, told to only choose n out of many candidates, ... ?
400
Giving away day-old bagels at my bakery for free.
What is a 100% decrease?
400
The Polsby-Popper score of a district is a ratio of these two measures.
What are perimeter and area?
400
The number 28 in this box and whiskers plot.
What is Q3 or the 75th percentile?
400
The walk x5x1x6x4x3x2 on the graph below.
What is an Euler trail?
400
This is the number of different ballots possible in a 6 candidate race.
What is 6! or 6x5x4x3x2x1 or 720.
500
The temperature dropped from 14 degrees on Monday to -7 on Tuesday.
What is a 150% decrease?
500
This is the number of U.S. Congressional seats in Wisconsin since 2003.
What is 8?
500
This value tells us how correlated data on a scatter plot is; when it's closer to 1 we are strongly correlated.
What is the R-value?
500
The walk v2x6v2 on the graph below.
What is a simple cycle?
500
This Big10 school uses the Borda count in it's student government elections.
What is the University of Michigan?