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There are three things a variable could be referring to
What type of variable is age?
Answer at pollev.com/<name>
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Images are composed of pixels (this image is 1012 by 1520)
The color in each pixel is in RGB
Each band takes a value from 0-255
This image is data with 1020 x 1520 x 3 values.
To simplify, assume our photos are 8 x 8 grayscale images.
If you were to put the data from these (8 x 8 grayscale) images into a data frame, what would the dimensions of that data frame be in rows x columns?
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