A researcher is investigating how the amount of carbon dioxide in the air influences the rate of photosynthesis in a certain type of plant. The
researcher uses ten identical plants and places them in ten closed
environments that are identical except for the amount of carbon dioxide
in the air. The researcher measures the amount of oxygen each plant
produces to determine their photosynthetic activity.
Which would be the BEST data to display for comparing the
photosynthetic activity of the plants.