Jason Voorhees Kills Per Movie

On Screen Deaths of Unfortunate Characters in Friday the 13<sup>th</sup> Films

As an 80s horror film junkie, I wanted to know how Jason Voorhees's slasher tendency has changed over time. So I went through IMDB and found the reported deaths done by both Jason and secondary characters. I then compiled the data into a single .csv file, shown below:

dat

##                                                name part kills jasonkills
## 1                            Friday the 13th (1980)    1    10          0
## 2                           Friday the 13th Part II    2     8          8
## 3                          Friday the 13th Part III    3    10         10
## 4                Friday the 13th: The Final Chapter    4    13         13
## 5                  Friday the 13th: A New Beginning    5    19          0
## 6              Jason Lives: Friday the 13th Part VI    6    17         17
## 7           Friday the 13th Part VII: The New Blood    7    15         15
## 8  Friday the 13th Part VIII: Jason Takes Manhattan    8    19         17
## 9              Jason Goes to Hell: The Final Friday    9    26         23
## 10                                          Jason X   10    26         24
## 11                           Friday the 13th (2009)   11    12         12
##                                                   movie
## 1                               Friday the 13th\n(1980)
## 2                              Friday the 13th\nPart II
## 3                             Friday the 13th\nPart III
## 4                   Friday the 13th:\nThe Final Chapter
## 5                     Friday the 13th:\nA New Beginning
## 6                Jason Lives:\nFriday the 13th\nPart VI
## 7            Friday the 13th\n Part VII:\nThe New Blood
## 8  Friday the 13th\n Parv VIII:\nJason Takes\nManhattan
## 9                  Jason Goes to Hell\nThe Final Friday
## 10                                              Jason X
## 11                              Friday the 13th\n(2009)

To find out how many people Jason himself killed, it was a simple process of summation using sum(dat$jasonkills) to reveal: 

sum(dat$jasonkills)

## [1] 139

This compares with the total number of kills reaching 

sum(dat$kills)

## [1] 175

Next, I simply renamed the movies using the '\n' spacer so the titles would be readable. Then, using the melt function of the reshape2 package, I consolidated the data into something easily plotable: 

head(m)

##                                   name part
## 1               Friday the 13th (1980)    1
## 2              Friday the 13th Part II    2
## 3             Friday the 13th Part III    3
## 4   Friday the 13th: The Final Chapter    4
## 5     Friday the 13th: A New Beginning    5
## 6 Jason Lives: Friday the 13th Part VI    6
##                                    movie variable value
## 1                Friday the 13th\n(1980)    kills    10
## 2               Friday the 13th\nPart II    kills     8
## 3              Friday the 13th\nPart III    kills    10
## 4    Friday the 13th:\nThe Final Chapter    kills    13
## 5      Friday the 13th:\nA New Beginning    kills    19
## 6 Jason Lives:\nFriday the 13th\nPart VI    kills    17

Therefore there were 36 deaths in the Friday the 13th franchise not cauused by Jason.

Finally, some quick plotting in ggplot2 produced the following: 

require(ggplot2)

## Loading required package: ggplot2

ggplot(m, aes(x=part, y=value, color=variable, shape=variable, fill=variable)) +
  geom_bar(stat='identity', position=position_dodge(), color='black') +
  geom_point(size=8) + geom_line() +
  nolines_tilt(12) +
  scale_x_continuous(labels=m$movie, breaks=m$part, name="") +
  ylab("On-Screen Deaths") +
  scale_y_continuous(breaks=seq(0,30,5)) +
  scale_color_manual(name="On-Screen Deaths",
                     values=c("black", "red"),
                     labels=c("Total Deaths", "Jason Kills")) +
  scale_shape_manual(name="On-Screen Deaths",
                     values=c(1, 4),
                     labels=c("Total Deaths", "Jason Kills")) +
  scale_fill_manual(name="On-Screen Deaths",
                    values=c('grey', 'red4'),
                    labels=c('Total Deaths', 'Jason Kills'))

## Loading required package: grid

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