Why split data into train and test in linear regression?

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I am wondering how train and test set works in linear regression.
If I train the data it will give me a line of best fit, say I for my train data I am using first 70% of dataset => first 70% of the line is from training set and final 30% is from unseen testing set?
machine-learning linear-regression
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$begingroup$
I am wondering how train and test set works in linear regression.
If I train the data it will give me a line of best fit, say I for my train data I am using first 70% of dataset => first 70% of the line is from training set and final 30% is from unseen testing set?
machine-learning linear-regression
New contributor
h_musk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I am wondering how train and test set works in linear regression.
If I train the data it will give me a line of best fit, say I for my train data I am using first 70% of dataset => first 70% of the line is from training set and final 30% is from unseen testing set?
machine-learning linear-regression
New contributor
h_musk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I am wondering how train and test set works in linear regression.
If I train the data it will give me a line of best fit, say I for my train data I am using first 70% of dataset => first 70% of the line is from training set and final 30% is from unseen testing set?
machine-learning linear-regression
machine-learning linear-regression
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h_musk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
h_musk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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h_musk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked 2 mins ago
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