Well metric unit is for measurement and place value units is for numbers

Different values of b.
<h3>Answer: There is no logarithmic function whose graph goes through given points.</h3><h3 />
Maybe the second point is 
Substitute:

<h3>Then we have the answer:</h3>

I believe the answer is A, the standard deviation is preferable to the range as a measure of variation because the standard deviation takes into account all of the observations, whereas the range considers only the largest and the smallest. Range gives an overall spread of data from the lowest to the largest and thus can be influenced by anomalies, standard deviation on the other hand, takes into account the variable data/spread about the mean and allows for statistical use so inferences can be made.<span />