Homicide rates and game sales

I took a quick look at game sales and homicide rates.

Homicide (per 100 000 people) vs game sales (dollars per people) at 2011
Homicide (per 100 000 people) vs game sales (dollars per people) at 2011

Regression analysis was made using R (version 3.1.1) and lm. 2011 was year where I had null data points minimised.

               Estimate Std. Error t value Pr(>|t|)  
(Intercept)      5.1644     1.8820   2.744   0.0158 *
adj.game.sales  -0.3391     0.2475  -1.370   0.1922  
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 5.507 on 14 degrees of freedom
Multiple R-squared:  0.1183,	Adjusted R-squared:  0.05527 
F-statistic: 1.878 on 1 and 14 DF,  p-value: 0.1922

I assumed that violent homicides are linearly distributed.

While regression shows downward trend, the analysis does not suggest significant connection between game sale and homicide rates.


Published by lankoski

Petri Lankoski, D.Arts, is a Associate Professor in Game Studies at the school of Communication, Media and IT at the Södertörn University, Sweden. His research focuses on game design, game characters, role-playing, and playing experience. Petri has been concentrating on single-player video games but researched also (multi-player) pnp and live-action role-playing games. This blog focuses on his research on games and related things.

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