Question

A scientist collected the following data, which show how the pressure of water vapor changes with temperature.

Temperature (°C) Pressure (mm Hg)
0
4.5
10
9.6
20
19.1
30
33.2
40
58.7
50
95.6

What would a scientist do to best communicate these data to other scientists in a presentation?
Replace the table with text highlighting pressures.
Change the unit of pressure to atm.
Make a graph for better visual representation.
Display only rows 1, 3, and 6 of the data to simplify results.

Answer 1

Make a graph for better visual representation.

Reason: a plotted scatter (or line) of pressure vs. temperature shows the trend at a glance, is easier to interpret in a talk, and supports discussion of relationships or fits. In the slide include axis labels and units, a title, and (if useful) a fitted curve or error bars. The other options either lose information (text or dropping rows) or are only a small unit change (mm Hg → atm) and do not improve visual clarity.