Showing posts with label politics. Show all posts
Showing posts with label politics. Show all posts

Sunday, July 3, 2016

Analyzing the Annual Republicans vs. Democrats Congressional Baseball Game

Every year, the United States Congress takes a break from blocking each others bills and plays a charity baseball game. The best part, the teams are broken down by party lines, Republicans vs. Democrats. The tradition started in 1909 by Representative John Tener of Pennsylvania, a former professional baseball player. Last week was the annual game and Republicans were able to break a 7 year winning streak by the Democrats.

Below the net wins over the series is shown. The higher on the y axis the more Republican wins and the lower on the y axis the more Democrat wins. From this graph it is fairly obvious that each party has had long winning streaks. The gray dots represent years when the game was not held or I could not find any information about the game. In 1935, 1937, 1938, 1939, and 1941, games were held between members of congress and the press.


The following graph displays the points scored by each team over time. In the early years of the series, the games had much higher total scores than more recent years.

Next the point differentials were explored. The point differential is the difference between the scores of the two teams. Many of the closest games were held in the late seventies through the nineties. This time period also saw few winning streaks because the competition was fairly even between the parties.
A histogram was formed to understand the distribution of point differences. The Democrats have some extremely large wins with three wins over 20 points and the Republicans have none. Another interesting finding is that only one game ended in a tie. This is surprising because the charity event does not have overtime so it is logical to think out of the 81 games played more than one would end in a tie.


Over the years, the annual game has been held at many different locations.  Each party has had different rates of success at each field. The winning percentage at each field was calculated to understand if either party has a home-field-advantage at any park. Langley High School is a bit of an outlier because it was selected as the location after two rain delays and only hosted one game. American League Park II and Georgetown Field were the first two stadiums to host the game and each only hosted one game. Memorial Stadium had the fourth fewest games with only four, but all other locations had nine or more games.

Ironically, RFK Stadium, named after the famous Democratic U.S. Senator, has given Republicans a strong home-field-advantage. Republicans have won 13 out of the 14 games played at the stadium. Democrats have seen similar success at Nationals Park; winning 7 out of the 9 games.

Currently, I am planning to update these graphs each year after the annual game. Please feel free to add ideas for additional graphs or analysis in the comment section.


Notes:
  1. The data came from https://en.wikipedia.org/wiki/Congressional_Baseball_Game#Game_results
  2. Some of the stadiums were renamed over the years and the original data set contained both names. For the analysis, the same stadiums were combined with the most recent name.

Friday, June 24, 2016

How Gender and Race Affect Police Interactions

Recently, police violence has become the focus of a lot of media attention. It has formed many protests and organizations around reducing police violence. Many of the organizations are specially focused on reducing violence toward blacks because it is a problem disproportionately effecting the black community. This post seeks to investigate some of these claims and understand the relationship between the violence each ethnic group experiences and their violence against police.

The following graphics come from a conversation about disparities between races when it comes to police killings. The discussion turned to the fact that only some disparities are thought of as problems of the system but others are generally thought to be acceptable. For example, blacks make up about 11% of the population, but 29% of the police killings. This disparity is largely seen as racism in the law enforcement and the overall justice system. Critics of this assumption usually point to the higher rates of crimes committed by blacks compared to whites and other races. However, the use of crime statistics from, what some believe is a racist institution is not a good method for explaining the differences in police kill rates.

Another group that is disproportionately killed, compared to their percentage of the population, is men.  Males make up a little less than half of the population (49.1%), but are 94.2% of the police killing victims. However, no one asserts the justice department to be sexist. The group discussing this matter largely agreed the reason for men to disproportionately be killed by police is because men most likely kill police more than women.

The follow graphic was created to compare the population, the proportion of people killed by police, and the number of police killed, broken down by gender. Men make up 94.2% of police killings, but also were responsible for 97.5% of police murders. This means while only half the population, men are 16 times more likely to be killed by police than compared to women. However, the killer of a police officer is 39 times more likely to be a man compared to a woman.

A similar graphic was created broken down by race (Note: http://killedbypolice.net/ did not use the method of classifying asians as the population data and FBI, so asians was included in "Other" for the people killed by police. Also the FBI defines hispanics as a subset of whites and not their own category so this is why hispanics are not represented in the "Killed Police" section). The chart below shows blacks are much more likely to be killed by police compared to their portion of the population, however while only being 29.5% of the people killed by police and 11% of the population, 43% of police officers are killed by blacks. 

Personally, I do not believe you can say that one race can be expected to be killed more because they kill police more. I believe, unlike gender, there are socio-economic differences between the groups that could lead to a greater likelihood of turning to crime because of lack of economic opportunity. Another factor is the populations are not perfectly comparable. Whites and asians households have fewer children than black and hispanics [3]. This leads to a lower ratio of old people to young people in the black and hispanics populations. Since the vast majority of people committing murders and/or being killed by police are young, populations with fewer old people will look like they commit more murders per capita.

Below is the R code used to generate the plots.


Sources
[1] http://killedbypolice.net/ (May 2, 2013)
[2] https://www.fbi.gov/about-us/cjis/ucr/leoka/2013/tables/table_44_leos_fk_race_and_sex_of_known_offender_2004-2013.xls (April 10, 2016)
[3] http://www.pewsocialtrends.org/2012/05/17/explaining-why-minority-births-now-outnumber-white-births/ (April 29, 2016)

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########################### R Code ################################ 

######### By Race ###########
# Cop killing graphic
# https://www.fbi.gov/about-us/cjis/ucr/leoka/2013/tables/table_44_leos_fk_race_and_sex_of_known_offender_2004-2013.xls
cop_killer_race <- c("White", "Black", "Asian", "Other")
cop_killer_quanity <- c(289, 243, 9, 24)
variable <- rep("Killed Police", length(cop_killer_race))
percent <- cop_killer_quanity/sum(cop_killer_quanity)
cop_killer <- data.frame(race=cop_killer_race, quanity=cop_killer_quanity, type=variable, percent=percent)
 
# People killed by cops
# Source killedbypolice.net (May 2, 2013)
cop_killed_race <- c("White", "Black", "Hispanic", "Other")
cop_killed_quanity <- c(782, 464, 302, 26)
variable <- rep("Killed by Police", length(cop_killed_race))
percent <- cop_killed_quanity/sum(cop_killed_quanity)
killed_by_cop <- data.frame(race=cop_killed_race, quanity=cop_killed_quanity, type=variable, percent=percent)
 
#Population Data
population_race <- c("White", "Black", "Asian", "Hispanic", "Other")
population_quanity <- c(196817552, 37685848, 14465124, 50477594, 28116441+2932248+540013)
variable <- rep("Population ", length(population_race))
percent <- population_quanity/sum(population_quanity)
population <- data.frame(race=population_race, quanity=population_quanity, type=variable, percent=percent)
 
# Bind the three data frames
data <- rbind(population, killed_by_cop, cop_killer )
 
# Calc the placement of the percent text in the graph
df <- data
df <- transform(df, mid_y = ave(df$percent, df$type, FUN = function(val) cumsum(val) - (0.5 * val)))
 
# Plot
ggplot(data=df, aes(x=type, y=quanity, fill=race, label=paste(round(percent*100,1),"%"))) +
geom_bar(stat="identity", position = "fill") + labs(x = "", y = "Percent", fill = "Race") +
geom_text(aes(y = mid_y)) + theme_bw() +
annotate("text", label = "HallwayMathlete.com", x = 2, y = -.03, size = 4, colour = "gray")
 
######### By Gender ###########
# Gender Women killed
# https://www.fbi.gov/about-us/cjis/ucr/leoka/2013/tables/table_44_leos_fk_race_and_sex_of_known_offender_2004-2013.xls
cop_killer_gender <- c( "Female", "Male", "Not Reported")
cop_killer_quanity <- c(13, 551, 1)
variable <- rep("Killed Police", length(cop_killer_gender))
percent <- cop_killer_quanity/sum(cop_killer_quanity)
cop_killer <- data.frame(race=cop_killer_gender, quanity=cop_killer_quanity, type=variable, percent=percent)
 
# People killed by cops
# Source killedbypolice.net (May 2, 2013)
cop_killed_gender <- c("Female", "Male","Not Reported")
cop_killed_quanity <- c( 177,2916, 2)
variable <- rep("Killed by Police", length(cop_killed_gender))
percent <- cop_killed_quanity/sum(cop_killed_quanity)
killed_by_cop <- data.frame(race=cop_killed_gender, quanity=cop_killed_quanity, type=variable, percent=percent)
 
#Population Data
population_gender <- c("Female","Male")
population_quanity <- c(143368343, 138053563)
variable <- rep("Population ", length(population_gender))
percent <- population_quanity/sum(population_quanity)
population <- data.frame(race=population_gender, quanity=population_quanity, type=variable, percent=percent)
 
# Bind the three data frames
data <- rbind(population, killed_by_cop, cop_killer )
 
# Calc the placement of the percent text in the graph
df <- data
df <- transform(df, mid_y = ave(df$percent, df$type, FUN = function(val) cumsum(val) - (0.5 * val)))
 
# Plot
ggplot(data=df, aes(x=type, y=quanity, fill=race, label=paste(round(percent*100,1),"%"))) +
geom_bar(stat="identity", position = "fill") + labs(x = "", y = "Percent", fill = "Race") +
geom_text(aes(y = mid_y)) + theme_bw() +
annotate("text", label = "HallwayMathlete.com", x = 2, y = -.03, size = 4, colour = "gray")

Sunday, May 29, 2016

Salaries of Presidential Primary Voters by Candidate and State

The data used in this post comes from FiveThirtyEight and are put into easy to understand graphics. The first graphic shows the average salary of supports of each candidate by state. The states are ranked by highest average salary, Maryland, to the state with the lowest salary, Mississippi. The red line shows the average salary for each state. The first obvious conclusion is that John Kasich supporters make about $5-10 thousand more than supporters of other candidates. Second, in low salary states Clinton and Sanders supporter's have similar salaries, but when looking at higher salary states, Clinton supporters' salaries are even with Trump and Cruz supporters' salaries.


The following plot shows the distribution of average salaries for each Presidential Candidate. Again we see similar trends as before with Kasich having a high average income and Clinton having a mix of low and high income supporters.


The last plot shows the relationship between the average salary of a state and the average salary of a candidate's supporters. The red line is a perfect 1 to 1 ratio and the closer a candidate is to the red line the closer the candidate's supporters are to having the same salary as the average person of that state. The reason for almost all the dots falling above the line is because people with below average salaries are less likely to vote.


If you have any suggestions for plots using this data, please share in the comment section.


Note:

[1] All states are not included because all states have not held elections yet.