Data Representation and Interpretation

A team of oceanographers monitored sea surface temperatures (SST, in ${}^\circ\text{C}$) at three distinct coral reef monitoring stations ($S_1$, $S_2$, and $S_3$) during a 4-month summer observation period.

Based on Table 1, what is the difference between the average 4-month SST at Station $S_2$ and the average 4-month SST at Station $S_3$?

Plant physiologists measured the photosynthetic rate (in $\mu\text{mol CO}_2/\text{m}^2\cdot\text{s}$) of a C3 plant species exposed to three ambient temperature conditions ($20^\circ\text{C}$, $30^\circ\text{C}$, and $40^\circ\text{C}$) under constant saturating light intensity. The measured photosynthetic rates were $15.0\ \mu\text{mol CO}_2/\text{m}^2\cdot\text{s}$ at $20^\circ\text{C}$, $24.0\ \mu\text{mol CO}_2/\text{m}^2\cdot\text{s}$ at $30^\circ\text{C}$, and $9.0\ \mu\text{mol CO}_2/\text{m}^2\cdot\text{s}$ at $40^\circ\text{C}$.

Based on these data, is the following statement True or False?
"The mean photosynthetic rate of the plant across the three tested temperatures is $16.0\ \mu\text{mol CO}_2/\text{m}^2\cdot\text{s}$."

Biophysicists conducted an experiment measuring the action potential conduction velocity ($v$, in $\text{m/s}$) in unmyelinated giant nerve fibers as a function of fiber diameter ($d$, in $\mu\text{m}$) at a constant temperature of $20^\circ\text{C}$. The recorded data is presented in Table 1.

Based on Table 1, what is the average rate of change in conduction velocity, in $\text{m/s}$ per $100\,\mu\text{m}$ increase in fiber diameter, over the interval from $d = 200\,\mu\text{m}$ to $d = 600\,\mu\text{m}$?