Define the two aspects of a statistical relationship and explain why the order of specification of these two aspects is important

Whats the name of the vertical axis

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Which number line represents the solution set for the inequality -1/2x> 24?