Homicide rates and game sales

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

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

Coefficients:
               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.

Data:

• http://vgsales.wikia.com/wiki/Video_game_industry
• http://data.worldbank.org/indicator/VC.IHR.PSRC.P5
• http://www.prb.org/pdf12/2012-population-data-sheet_eng.pdf