What kind of gamer are you?

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1 What kind of gamer are you? Guillaume DECOOPMAN - Louis PIOTROWSKI - Jean-Marie SEGUY ENAC May 20, 2015 G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 1 / 26

2 1 Introduction G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 2 / 26

3 Introduction Purpose Estimate the weekly time spent to play video games Establish a model for this activity Database Use of a Google Form n = 72 answers Poll realized on a majority of students (92%) G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 3 / 26

4 Results Boxplot G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 4 / 26

5 1 Introduction G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 5 / 26

6 Variable Expected Effect Real Effect Significant Man + + No Student + - No Age - - No Height? No effect No Weight + No effect No In couple - - No Children - - No Income - No tendency - Sport frequency - + Yes Type : PC? + No Type : Home console + + Yes Type : Handheld console + + Yes Type : Smartphone? + No Number of screens + + No G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 6 / 26

7 (2) Variable Expected Effect Real Effect Significant Game : Action? + Yes Game : Adventure? + No Game : Sport? + No Game : Reflexion? + No Game : Strategy? + Yes Game : Simulation? + No Game : RPG + + Yes Alone? - No Online + + Yes Phase : Morning + + Yes Phase : Afternoon? + No Phase : Evening? + No Phase : Night + + Yes Budget + + Yes Event + + Yes G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 7 / 26

8 1 Introduction G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 8 / 26

9 First E-Views Results G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 9 / 26

10 Correlation Matrix G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 10 / 26

11 Correlation Matrix High correlation between the following : Children and Age : 0.86 Age and Student : Height and Weight : 0.63 There are many other cases of correlated variables. For each case, we only keep one in order to improve the model. G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 11 / 26

12 Second E-Views Results Parameters k = 15 R 2 = 0.49 Adjusted R 2 = 0.35 G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 12 / 26

13 Third E-Views Results Parameters k = 4 R 2 = 0.42 Adjusted R 2 = 0.38 G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 13 / 26

14 Equation : ln(y +1) = β 1 +β 2 HOMECONSOLE+β 3 ONLINE+β 4 MORNING +β 5 NIGHT +β 6 BUDGET (< 10)+β 7 ln(weight )+β 8 ln(weight ) 2 + β 9 ln(sportfreq + 1) + β 10 ln(sportfreq + 1) 2 + u (1) G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 14 / 26

15 Equation : ln(y + 1) = HOMECONSOLE ONLINE+ 0.75MORNING NIGHT 0.47(BUDGET < 10) ln(WEIGHT ) 3.86ln(WEIGHT ) ln(SPORTFREQ+1)+ 0.31ln(SPORTFREQ + 1) 2 (2) Wald Tests Low p-values so we reject the null hypothesis for each β i. G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 15 / 26

16 Optimized E-Views Results Parameters k = 9 R 2 = 0.63 Adjusted R 2 = 0.57 G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 16 / 26

17 1 Introduction G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 17 / 26

18 Weight Contribution G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 18 / 26

19 Sport Contribution G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 19 / 26

20 Probability Density Function G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 20 / 26

21 Residuals G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 21 / 26

22 Residuals G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 22 / 26

23 Normality of the Residuals G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 23 / 26

24 Normality of the Residuals (2) G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 24 / 26

25 1 Introduction G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 25 / 26

26 Main points Strong influence of the periods of the day. Validity of the model for : a weight from 45 to 115 kg sport frequency from 0 to 15 h Surprising results : Complexity of the effect of the weight and sport frequency G. DECOOPMAN - L. PIOTROWSKI - J.M. SEGUY What kind of gamer are you? 26 / 26

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