Negative Correlation

As one variable increases, the other decreases.

Positive Correlation

As one variable increases, the other also increases.

No Correlation

No real pattern between two variables

Correlation ≠ Causation

• It's possible one variable influences the other

• Maybe both variables are influenced by a third factor

• Or maybe they don't relate at all

• Explore at tiny.cc/spurious

Answer the questions on tiny.cc/U5L3P2

Questions, comments, or concerns?

Read more on tiny.cc/U5L3P3 (focus on the yellow & gray boxes).

Cleaning data

The process of making the data uniform without changing its meaning (such as replacing abbreviations, spellings, and capitalizations with the intended word or converting miles to kilometers).

Programmers can use programs to filter and clean digital data, thereby gaining insight and knowledge.

It's so meta...

Data can even include data about itself.

EX: A music file (data: song) might contain data describing the song title, artist, album, genre, record label, etc.

EX: An image file (data: pic) might include data for the date that the picture was taken, the location where it was taken, information about the camera settings, the serial number of the specific camera, etc.

This kind of information about data is called metadata.

Trump official photos during hospitalization for Covid-19

Assignments

• Read Lab 3 starting at http://tiny.cc/U5L3P1 (click Next)

• Khan Academy: Readings optional. 75% accuracy req'd on exercises for completion credit. Review wrong answers before moving on

• AP Classroom: "5.3: Data2Info, Part 1", 12 Q's

• AP Classroom: "5.3: Data2Info, Part 2", 12 Q's