From the course: Learning Data Science: Understanding the Basics
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Find a correlation
From the course: Learning Data Science: Understanding the Basics
Find a correlation
- We've talked a bit about descriptive statistics in analytics. Another idea to consider is correlation. Many companies use it to guess the types of products you'll buy. It's also used to connect you to friends and acquaintances. If you've used a service like Netflix, you've probably been amazed at how well the website can guess what movies you'll like. Amazon has been using correlation for years to recommend different products. Correlation is a series of statistical relationships that measure the degree that two things are related. It's usually measured in between one and zero. If there's a correlation of one, then the two things are strongly correlated. If there's a correlation of zero, the two things have no relationship. The one can be expressed as a positive or negative number. A negative one is typically an inverse, or anticorrelation. A positive correlation might be something like height and weight. The taller someone is, the more likely they are to weigh more. As height goes…
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