Machine Learning - Supervised & Unsupervised Learning

You own a company that produces mobile phones. You keep track of how many mobile phones you have sold before.

You want to predict how many mobile phones you will sell over the next 3 months. Is this a regression problem or a classification problem?

• This is a regression problem

• This is a classification problem

You want a software that analyses emails, and for each email determine if it is a spam email or not a spam email. Is this a regression problem or a classification problem?

• This is a regression problem

• This is a classification problem

Which of these problems would you address with an unsupervised learning algorithm?

• Given a dataset of MRI scans labelled 'has tumor' or

  or 'does not have tumor', learn to classify whether a new patient has tumor.

• Given a dataset containing user data, learn to group them into different market segments automatically.

• Given a labeled dataset containing pictures of animals, determine whether the picture contains a cat.