Challenge #18: Predicting Baseball Wins

[avinashsunchu]

Spoiler

 

[aheikes]

Spoiler

[atcodedog05]

On a spree to binge complete weekly challenges

Spoiler

This is my solution

Got bit confused with the later calculation. Had to check for hints.

[steven4320555]

A new type of challenge! Nice

Spoiler

The top 10 most relevant variables are straight forward.

I'd love to spend some more time understanding and fine tuning the models, although, I got some sensible results. Note: given the small number of records, I have used all values to fit the linear regression model. 

I'd love to spend some time looking at solutions and predictions submitted by others. 

[steven4320555]

I clicked reply from here: https://community.alteryx.com/t5/Weekly-Challenge/Challenge-18-Predicting-Baseball-Wins/m-p/79508/hi...

Spoiler

Hi Jamie,

I was having similar thoughts for a while, about the 161 games 🙂 

It turns out the assumption for 162 games is used to calculate the predicted losses from predicted wins. 

Steven

But it appeared at the end of the thread. 

[steven4320555]

Wow!!! Such a nice and comprehensive explanation! Is for @samjohnson

https://community.alteryx.com/t5/Weekly-Challenge/Challenge-18-Predicting-Baseball-Wins/m-p/86248/hi...

Goes very well with 

• Interactive Lessons: Predictive Modeling

 https://community.alteryx.com/t5/Interactive-Lessons/tkb-p/interactive-lessons/label-name/Predictive...

Without domain knowledge, building a practical model can be tough. I guess, this is part of reason why most people just used a linear regression by default. 

Thanks!

Steven

[Jean-Balteryx]

Here is my solution !

[JeremyGonzva]

my solution

[erambeau]

Hi,

Here is my solution.

For the sake of curiosity, I added a stepwise after the modelisation with the 10 variables, in order the avoid some multi-colinearity issues. The number of variables dropped down to 5.

The predictions are quite the same, and the sum of least squares is better on the 6 cities considered.

[AMansour]

Hello,

Here's my solution

Spoiler

Cheers,

Amr