First, please make the following changes to the attached online gaming activity data:

$1.$ Delete the in$-$game rank variable

$2.$ Rename the remaining variables for your convenience

$3.$ Ensure that all categorical variables are properly encoded $($i$.$e$.,$ nominal variables should be encoded as text strings and ordinal variables should be encoded as numeric values$).$ Note the following value mappings:

$-$ Game Genre: $1=$Adventure, $2=$RPG$,3=$Shooter, $4=$Simulation, $5=$Strategy

$-$ Platform: $1=$Console, $2=$Mobile, $3=$PC

$-$ Player Level: $1=$Casual, $2=$Competitive, $3=$Hardcore

$-$ Region: $1=$Africa, $2=$Asia, $3=$Europe, $4=$North America, $5=$South America

$4.$ Ensure that all quantitative variables are numeric data types $($i$.$e$.,$ Num$)$

$5.$ Remove all missing values

$6.$ Keep only mobile games

Then, please answer the following questions using the final dataset $($Hint: It should contain $296$ rows$)$:

$-$ Q: What is the average player retention rate?

$-$ A: TBD

$-$ Q: Which region has the highest average player level?

$-$ A: TBD

$-$ Q: Which genre has the highest average in$-$game purchases?

$-$ A: TBD

$-$ Q: Is session duration related to in$-$game purchases? If so$,$ how?

$-$ A: TBD