FIFA Analysis

Understanding Wage, Penalties and Preferred Foot for Professional Football Players

Author

By: Shanteé Enitencio

Data Understanding

The data which were utilized for this report were generated from The Federation Internationale de Football Association. The data were compiled by the datasetsICR package list in R. The dataset was comprised of 18207 observations and 80 variables.

Viewing the data

This summary displays the first 10 observations of the dataset.

                Name Age Nationality Overall Potential                Club
1           L. Messi  31   Argentina      94        94        FC Barcelona
2  Cristiano Ronaldo  33    Portugal      94        94            Juventus
3          Neymar Jr  26      Brazil      92        93 Paris Saint-Germain
4             De Gea  27       Spain      91        93   Manchester United
5       K. De Bruyne  27     Belgium      91        92     Manchester City
6          E. Hazard  27     Belgium      91        91             Chelsea
7           L. Modri  32     Croatia      91        91         Real Madrid
8           L. Surez  31     Uruguay      91        91        FC Barcelona
9       Sergio Ramos  32       Spain      91        91         Real Madrid
10          J. Oblak  25    Slovenia      90        93     Atletico Madrid
   Value Wage Special Preferred.Foot International.Reputation Weak.Foot
1  110.5  565    2202           Left                        5         4
2     77  405    2228          Right                        5         4
3  118.5  290    2143          Right                        5         5
4     72  260    1471          Right                        4         3
5    102  355    2281          Right                        4         5
6     93  340    2142          Right                        4         4
7     67  420    2280          Right                        4         4
8     80  455    2346          Right                        5         4
9     51  380    2201          Right                        4         3
10    68   94    1331          Right                        3         3
   Skill.Moves      Work.Rate Position Jersey.Number Contract.Valid.Until
1            4 Medium/ Medium       RF            10                 2021
2            5      High/ Low       ST             7                 2022
3            5   High/ Medium       LW            10                 2022
4            1 Medium/ Medium       GK             1                 2020
5            4     High/ High      RCM             7                 2023
6            4   High/ Medium       LF            10                 2020
7            4     High/ High      RCM            10                 2020
8            3   High/ Medium       RS             9                 2021
9            3   High/ Medium      RCB            15                 2020
10           1 Medium/ Medium       GK             1                 2021
   Height   Weight   LS   ST   RS   LW   LF   CF   RF   RW  LAM  CAM  RAM   LM
1  170.18 72.12119 88+2 88+2 88+2 92+2 93+2 93+2 93+2 92+2 93+2 93+2 93+2 91+2
2  187.96 83.00740 91+3 91+3 91+3 89+3 90+3 90+3 90+3 89+3 88+3 88+3 88+3 88+3
3  175.26 68.03886 84+3 84+3 84+3 89+3 89+3 89+3 89+3 89+3 89+3 89+3 89+3 88+3
4  193.04 76.20352                                                            
5  180.34 69.85322 82+3 82+3 82+3 87+3 87+3 87+3 87+3 87+3 88+3 88+3 88+3 88+3
6  172.72 73.93556 83+3 83+3 83+3 89+3 88+3 88+3 88+3 89+3 89+3 89+3 89+3 89+3
7  172.72 66.22449 77+3 77+3 77+3 85+3 84+3 84+3 84+3 85+3 87+3 87+3 87+3 86+3
8  182.88 86.18255 87+5 87+5 87+5 86+5 87+5 87+5 87+5 86+5 85+5 85+5 85+5 84+5
9  182.88 82.10022 73+3 73+3 73+3 70+3 71+3 71+3 71+3 70+3 71+3 71+3 71+3 72+3
10 187.96 87.08974                                                            
    LCM   CM  RCM   RM  LWB  LDM  CDM  RDM  RWB   LB  LCB   CB  RCB   RB
1  84+2 84+2 84+2 91+2 64+2 61+2 61+2 61+2 64+2 59+2 47+2 47+2 47+2 59+2
2  81+3 81+3 81+3 88+3 65+3 61+3 61+3 61+3 65+3 61+3 53+3 53+3 53+3 61+3
3  81+3 81+3 81+3 88+3 65+3 60+3 60+3 60+3 65+3 60+3 47+3 47+3 47+3 60+3
4                                                                       
5  87+3 87+3 87+3 88+3 77+3 77+3 77+3 77+3 77+3 73+3 66+3 66+3 66+3 73+3
6  82+3 82+3 82+3 89+3 66+3 63+3 63+3 63+3 66+3 60+3 49+3 49+3 49+3 60+3
7  88+3 88+3 88+3 86+3 82+3 81+3 81+3 81+3 82+3 79+3 71+3 71+3 71+3 79+3
8  79+5 79+5 79+5 84+5 69+5 68+5 68+5 68+5 69+5 66+5 63+5 63+5 63+5 66+5
9  75+3 75+3 75+3 72+3 81+3 84+3 84+3 84+3 81+3 84+3 87+3 87+3 87+3 84+3
10                                                                      
   Crossing Finishing HeadingAccuracy ShortPassing Volleys Dribbling Curve
1        84        95              70           90      86        97    93
2        84        94              89           81      87        88    81
3        79        87              62           84      84        96    88
4        17        13              21           50      13        18    21
5        93        82              55           92      82        86    85
6        81        84              61           89      80        95    83
7        86        72              55           93      76        90    85
8        77        93              77           82      88        87    86
9        66        60              91           78      66        63    74
10       13        11              15           29      13        12    13
   FKAccuracy LongPassing BallControl Acceleration SprintSpeed Agility
1          94          87          96           91          86      91
2          76          77          94           89          91      87
3          87          78          95           94          90      96
4          19          51          42           57          58      60
5          83          91          91           78          76      79
6          79          83          94           94          88      95
7          78          88          93           80          72      93
8          84          64          90           86          75      82
9          72          77          84           76          75      78
10         14          26          16           43          60      67
   Reactions Balance ShotPower Jumping Stamina Strength LongShots Aggression
1         95      95        85      68      72       59        94         48
2         96      70        95      95      88       79        93         63
3         94      84        80      61      81       49        82         56
4         90      43        31      67      43       64        12         38
5         91      77        91      63      90       75        91         76
6         90      94        82      56      83       66        80         54
7         90      94        79      68      89       58        82         62
8         92      83        86      69      90       83        85         87
9         85      66        79      93      84       83        59         88
10        86      49        22      76      41       78        12         34
   Interceptions Positioning Vision Penalties Composure Marking StandingTackle
1             22          94     94        75        96      33             28
2             29          95     82        85        95      28             31
3             36          89     87        81        94      27             24
4             30          12     68        40        68      15             21
5             61          87     94        79        88      68             58
6             41          87     89        86        91      34             27
7             83          79     92        82        84      60             76
8             41          92     84        85        85      62             45
9             90          60     63        75        82      87             92
10            19          11     70        11        70      27             12
   SlidingTackle GKDiving GKHandling GKKicking GKPositioning GKReflexes
1             26        6         11        15            14          8
2             23        7         11        15            14         11
3             33        9          9        15            15         11
4             13       90         85        87            88         94
5             51       15         13         5            10         13
6             22       11         12         6             8          8
7             73       13          9         7            14          9
8             38       27         25        31            33         37
9             91       11          8         9             7         11
10            18       86         92        78            88         89
   Release.Clause
1           226.5
2           127.1
3           228.1
4           138.6
5           196.4
6           172.1
7           137.4
8             164
9           104.6
10          144.5

This summary displays the last 10 observations of the dataset.

                    Name Age         Nationality Overall Potential
18198         D. Holland  18 Republic of Ireland      47        61
18199         J. Livesey  18             England      47        70
18200       M. Baldisimo  18              Canada      47        69
18201           J. Young  18            Scotland      47        62
18202           D. Walsh  18 Republic of Ireland      47        68
18203       J. Lundstram  19             England      47        65
18204 N. Christoffersson  19              Sweden      47        63
18205          B. Worman  16             England      47        67
18206     D. Walker-Rice  17             England      47        66
18207          G. Nugent  16             England      46        66
                        Club Value Wage Special Preferred.Foot
18198              Cork City    60    1    1362          Right
18199          Burton Albion    60    1     792          Right
18200 Vancouver Whitecaps FC    70    1    1303          Right
18201           Swindon Town    60    1    1203           Left
18202           Waterford FC    60    1    1098           Left
18203        Crewe Alexandra    60    1    1307          Right
18204         Trelleborgs FF    60    1    1098          Right
18205       Cambridge United    60    1    1189          Right
18206        Tranmere Rovers    60    1    1228          Right
18207        Tranmere Rovers    60    1    1321          Right
      International.Reputation Weak.Foot Skill.Moves      Work.Rate Position
18198                        1         3           2 Medium/ Medium       CM
18199                        1         2           1 Medium/ Medium       GK
18200                        1         3           2   Medium/ High       CM
18201                        1         2           2 Medium/ Medium       ST
18202                        1         3           2 Medium/ Medium       RB
18203                        1         2           2 Medium/ Medium       CM
18204                        1         2           2 Medium/ Medium       ST
18205                        1         3           2 Medium/ Medium       ST
18206                        1         3           2 Medium/ Medium       RW
18207                        1         3           2 Medium/ Medium       CM
      Jersey.Number Contract.Valid.Until Height   Weight   LS   ST   RS   LW
18198            14                 2018 177.80 63.95652 45+2 45+2 45+2 49+2
18199            22                 2021 180.34 69.85322                    
18200            65                 2021 167.64 68.03886 42+2 42+2 42+2 43+2
18201            21                 2019 175.26 71.21400 45+2 45+2 45+2 44+2
18202            29                 2018 185.42 76.20352 32+2 32+2 32+2 29+2
18203            22                 2019 175.26 60.78138 42+2 42+2 42+2 44+2
18204            21                 2020 190.50 77.11070 45+2 45+2 45+2 39+2
18205            33                 2021 172.72 67.13167 45+2 45+2 45+2 45+2
18206            34                 2019 177.80 69.85322 47+2 47+2 47+2 47+2
18207            33                 2019 177.80 79.83226 43+2 43+2 43+2 45+2
        LF   CF   RF   RW  LAM  CAM  RAM   LM  LCM   CM  RCM   RM  LWB  LDM
18198 48+2 48+2 48+2 49+2 49+2 49+2 49+2 49+2 47+2 47+2 47+2 49+2 45+2 44+2
18199                                                                      
18200 44+2 44+2 44+2 43+2 44+2 44+2 44+2 45+2 45+2 45+2 45+2 45+2 47+2 48+2
18201 45+2 45+2 45+2 44+2 44+2 44+2 44+2 41+2 37+2 37+2 37+2 41+2 31+2 28+2
18202 30+2 30+2 30+2 29+2 28+2 28+2 28+2 30+2 30+2 30+2 30+2 30+2 39+2 38+2
18203 44+2 44+2 44+2 44+2 45+2 45+2 45+2 44+2 45+2 45+2 45+2 44+2 44+2 45+2
18204 42+2 42+2 42+2 39+2 40+2 40+2 40+2 38+2 35+2 35+2 35+2 38+2 30+2 31+2
18205 46+2 46+2 46+2 45+2 44+2 44+2 44+2 44+2 38+2 38+2 38+2 44+2 34+2 30+2
18206 46+2 46+2 46+2 47+2 45+2 45+2 45+2 46+2 39+2 39+2 39+2 46+2 36+2 32+2
18207 44+2 44+2 44+2 45+2 45+2 45+2 45+2 46+2 45+2 45+2 45+2 46+2 46+2 46+2
       CDM  RDM  RWB   LB  LCB   CB  RCB   RB Crossing Finishing
18198 44+2 44+2 45+2 44+2 40+2 40+2 40+2 44+2       44        44
18199                                               14         8
18200 48+2 48+2 47+2 47+2 48+2 48+2 48+2 47+2       31        31
18201 28+2 28+2 31+2 30+2 27+2 27+2 27+2 30+2       28        47
18202 38+2 38+2 39+2 42+2 46+2 46+2 46+2 42+2       22        23
18203 45+2 45+2 44+2 45+2 45+2 45+2 45+2 45+2       34        38
18204 31+2 31+2 30+2 29+2 32+2 32+2 32+2 29+2       23        52
18205 30+2 30+2 34+2 33+2 28+2 28+2 28+2 33+2       25        40
18206 32+2 32+2 36+2 35+2 31+2 31+2 31+2 35+2       44        50
18207 46+2 46+2 46+2 46+2 47+2 47+2 47+2 46+2       41        34
      HeadingAccuracy ShortPassing Volleys Dribbling Curve FKAccuracy
18198              36           53      43        50    48         46
18199              14           19       8        10    13         10
18200              41           51      26        46    35         31
18201              47           42      37        39    32         25
18202              45           25      27        21    21         27
18203              40           49      25        42    30         34
18204              52           43      36        39    32         20
18205              46           38      38        45    38         27
18206              39           42      40        51    34         32
18207              46           48      30        43    40         34
      LongPassing BallControl Acceleration SprintSpeed Agility Reactions
18198          52          51           68          62      58        41
18199          21          11           18          24      22        36
18200          55          47           60          63      53        46
18201          30          41           65          48      64        54
18202          27          32           52          52      39        43
18203          45          43           54          57      60        49
18204          25          40           41          39      38        40
18205          28          44           70          69      50        47
18206          32          52           61          60      52        21
18207          44          51           57          55      55        51
      Balance ShotPower Jumping Stamina Strength LongShots Aggression
18198      62        50      55      50       38        37         37
18199      47        26      56      20       38         5         25
18200      55        49      57      42       43        30         53
18201      80        44      77      31       31        51         26
18202      48        39      74      39       52        16         44
18203      76        43      55      40       47        38         46
18204      52        41      47      43       67        42         47
18205      58        45      60      55       32        45         32
18206      71        64      42      40       48        34         33
18207      63        43      62      47       60        32         56
      Interceptions Positioning Vision Penalties Composure Marking
18198            28          39     48        49        52      41
18199             6           5     37        14        34      15
18200            49          35     40        36        40      48
18201            16          46     37        58        50      15
18202            45          20     31        38        43      44
18203            46          39     52        43        45      40
18204            16          46     33        43        42      22
18205            15          48     43        55        41      32
18206            22          44     47        50        46      20
18207            42          34     49        33        43      40
      StandingTackle SlidingTackle GKDiving GKHandling GKKicking GKPositioning
18198             47            38       13          6         9            10
18199             11            13       46         52        58            42
18200             49            49        7          7         9            14
18201             17            14       11         15        12            12
18202             47            53        9         10         9            11
18203             48            47       10         13         7             8
18204             15            19       10          9         9             5
18205             13            11        6          5        10             6
18206             25            27       14          6        14             8
18207             43            50       10         15         9            12
      GKReflexes Release.Clause
18198         15             88
18199         48            165
18200         15            175
18201         11            143
18202         13            153
18203          9            143
18204         12            113
18205         13            165
18206          9            143
18207          9            165

Variable Understanding

The main categorical variable that was used in this analysis to determine its relationship with wage and penalties was the player’s preferred foot to kick with. The following table indicates that most players used their right foot during the game and very few players did not have a preference.


 Left  None Right 
 4211    48 13948 

Charts

To understand the relationship between the wage a player received, the amount of penalties measured by the ” accuracy of shots from inside the penalty area” and their preferred foot, the following chart was made.

Chart 1

The data seemed to indicate that they were a clear positive relationship between the wage a player earned and the amount of penalties they were given. However, for most of the data points it seems that regardless of the amount of penalties that a player had in their careers they would expect to have the same salary. Likewise, player foot preference did not seem to have much of an effect, considering how much more right foot prevalence there was. The summary statistics for the variables tells the same story, the median wage for professional players is $3 million and the median player had 49 penalties. There are near 3 times more average earners than the players with more money and penalties, yet the higher earners pull the average upwards.

Chart2

Changes made

Because this dataset is really large, this chart was changed to now put all of the players that earned less than 30 million into a greyscale. I did this so that the user might be able to see how wage is affected by the penalties at higher wage levels. Additionally, new colors were chosen to represent their preferred kicking foot because these colors were more distinguishable from the previous colors. Finally, this chart seemed to indicate that both at lower wage levels and higher ones most players maintain around 70 penalties. Additionally, it takes a random sample of 50% of the dataset to show the true spread of the observations. Compressing these data points seemed to visually indicate that players earnings, penalties and their preferred foot were not perfectly proportional. In fact, most players made the same amount of money regardless of the amount of penalties they acquired or their foot of choice. However, it is interesting to note that the two highest earners are left footed.

Fitting a line

Attempting to fit a line through the points indicated that the more penalties a player had, the higher their wage would be and that right footed players earn less money. However, other factors such as Leonardo Messi being the highest earner and being left footed could be skewing the data against players who have a different dominant foot. Additionally, the penalty variables can also be explained by something similar. Because the more talented and higher earners are on the field more than the others, they are likely to have received more penalties during their careers. Therefore, more research is needed to fully understand the wage variable and what makes it grow.

Linear Fitting Model


Call:
lm(formula = Wage ~ Penalties + Preferred.Foot, data = cat_var)

Residuals:
   Min     1Q Median     3Q    Max 
-20.49  -8.69  -4.90   1.21 546.68 

Coefficients:
                    Estimate Std. Error t value Pr(>|t|)    
(Intercept)         -5.43504    0.61562  -8.829   <2e-16 ***
Penalties            0.31671    0.01029  30.775   <2e-16 ***
Preferred.FootRight -0.07284    0.38240  -0.190    0.849    
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 21.58 on 17915 degrees of freedom
  (289 observations deleted due to missingness)
Multiple R-squared:  0.05041,   Adjusted R-squared:  0.05031 
F-statistic: 475.5 on 2 and 17915 DF,  p-value: < 2.2e-16

Chart3

Changes made

For this chart a similar color change was done as the previous for the same distinction, this change revealed that the Manchester players are overwhelmingly right-footed. For this chart, wage amount was utilized to show the different levels of wages received by the Manchester United group. In addition to that, the players names were added as a label in order to be able to see the top 6 players on the team with the highest wages and penalties. Lastly the legend was added at the top in order to portray the x axis better.
##

The data also indicated that bigger clubs like Manchester United had higher wages for their players than the average amount in the league. The median wage these players received is $110 million and they had more penalties than league average.

Changes from Feedback

With the feedback that was acquired from my classmates the formatting was changed into the correct one. Additionally, clearer and more concise legends and labeling were able to be utilized. A deeper understanding and explanation of the data and its values was also added and finally there was a change in design and css formatting.

The specific things that were changed were: -The labeling of the categorical variables -More interpretation -A change in scale and quantity of variables being represented in each chart