Let's try to make some sense of this and understand the most common way data is organized -- in a table. What the heck are tables? These tables aren't the kind you can set your food on, or kick up your feet onto. In this case, a table organizes data into rows and columns.
are lines of data that go sideways, and
are lines of data that run up and down.
The headings tell you what each column of data represents, in this case the 'trip' number and types of trash ('plastic', 'glass', 'styrofoam', and 'cigarettes').
Q1: So what does the intersecting green box tell you?
A1: The intersecting green box gives the number of plastic pieces (given by column heading) collected on trip 2 (given by row heading).
Q2: How many pieces of styrofoam did the 4th trip collect?
A2: Figure it out from the table headings and click on your answer:
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