Question

which substance has the greatest standard deviation? phosphate oxalate uric acid

Explanation:

Step1: Understand standard deviation

Standard deviation measures the spread of data. In a bar - chart with error bars (which represent standard deviation), a longer error bar indicates a larger standard deviation.

Step2: Compare error bars

Looking at the error bars for phosphate, oxalate, and uric acid:

• The error bar for phosphate is relatively short.
• The error bar for oxalate is the shortest among the three.
• The error bar for uric acid is the longest.

Answer:

uric acid