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1 . 0 - Why are some games better than others? A little while ago, we explored how critics and users rate games. Now let
Why are some games better than others?
A little while ago, we explored how critics and users rate games. Now lets turn our attention to this question: Why are some games rated more highly than others?
Lets get your first impressions. Why do you think some games are better than others?
About the gamesales data
We will be using the gamesales data set. Because there are over platform categories in this data frame, these data have been filtered to include only three platforms that were produced by popular competitors and were released around the same time between :
PSSony
Wii Nintendo
XMicrosoft
Since we are loading the data from a CSV there is no documentation for the data frame. That means you can't use gamesales to get more information about the variables. Instead, here is a description of each of the variables:
Variable Description
Name The video game's name
Platform Platform of the games release; PS Wii, and X
YearofRelease Year of the game's release
Genre Genre of the game
Publisher Publisher of the game
NASales Sales in North America in millions
EUSales Sales in Europe in millions
JPSales Sales in Japan in millions
OtherSales Sales in the rest of the world in millions
GlobalSales Total worldwide sales in millions
CriticScore Aggregate score compiled by Metacritic staff
CriticCount The number of critics used in coming up with the critic score
UserScore Score by Metacritic's subscribers
UserCount Number of users who gave the user score
Rating The ESRB ratings Entertainment Software Rating Board
Lets consider one hypothesis as a class:
Game developers might create better games for some platforms than others. Maybe thats why those games might then be rated more highly.
Lets call this the Platform hypothesis. Before we look at the data, what do you think about this hypothesis? Do you think its true? Which platform might have better or worse games?
Exploring the Platform Hypothesis with Critic Scores
If we think a games Platform can help us explain the variation we see in CriticScore, how can we write this idea as a word equation? Which is the outcome and which is the explanatory variable?
Try to create a faceted histogram to help us see whether Platform might be related to critics ratings of games.
Looking at the histograms, what do you notice about these distributions? Does any Platform seem like it tends to have better or worse critic ratings?
Now try using a boxplot or jitterplot to explore the same hypothesis. Optional: Can you overlay the two?
Looking at this other visualization, do you see the same pattern you saw in the histograms? What pattern do you notice?
Based on these visualizations, if you knew that a game was a Wii game and had to guess its critics rating, would you adjust your guess to be a little lower or a little higher? Why?
Exploring the Platform Hypothesis on User Scores
As we all know, users are a little different from critics. Do you think we will see the same relationship between platform and ratings when we look at user scores? Why or why not?
If we think a games Platform can help us explain the variation we see in UserScore, how can we write this idea as a word equation? Which is the outcome and which is the explanatory variable?
Make two different visualizations your choice! to check out the Platform hypothesis on user ratings.
Looking at the visualizations, what do you notice about these distributions? Does any Platform seem like it tends to have better or worse user ratings?
If you knew that a game was a Wii game and had to guess its user rating, would you adjust your guess to be a little lower or a little higher? Why?
Wrapup of the Platform Hypothesis
One definition of explain variation is that if we know a little bit more about a game, we can use that information to make a better prediction of some outcome. Now that weve explored the Platform Hypothesis, does Platform help us explain variation on some outcome either critic or user ratings Which outcome?
When we look at a visualization and think yeah, this one looks like some of the variation is explained what features of the visualization should we look at
What are your overall conclusions? Does Platform matter for how good a game is
From Data to DecisionMaking
Hmmm... just out of curiosity, lets check which platforms have the top highest selling games globally using GlobalSales Which platforms have the highest game sales? Are they the same platforms that seem to have higher ratings? What explains this?
If you had to write a public relations statement on behalf of Wii games Nintendo company based on all the analyses weve done so far, what would you say?
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