2 mcqs

1)     A graph of a single set of data requires what features? Check all that apply.


Axis titles with units.


A caption that says why the graph is important. The caption should begin with a title.


A legend


A line of best fit.


A text box next to each data point.

2)

Which of the following items are always true of measurements? (check all that apply)


They have physical units.


If you do a good job they will be perfectly accurate and precise.


They always have some uncertainty (or "error").


They involve some kind of choice, or judgment, by the observer.