Question

look at the table to the right and use it to answer the following question. what type of graph or chart would best represent the data presented in the table? a bar graph a line graph a pie chart done paramecium contractile vacuole contractions salt concentration outside paramecium contractions per minute very high 2 high 8 medium 15 low 22 very low 30

Explanation:

To determine the best graph, we analyze each option:

• Bar graph: Compares discrete categories (salt concentrations) with their respective values (contractions per minute). It's ideal for showing differences between distinct groups.
• Line graph: Best for showing trends over a continuous variable (e.g., time, temperature), but here salt concentration is categorical (not continuous), so a line graph isn't suitable.
• Pie chart: Shows proportions of a whole, but the data here is about comparing values across categories, not showing parts of a whole.

Thus, a bar graph is best to represent the data.

Answer:

a bar graph