Describe the correlations from left to right ?

~plz explain I can’t
Get this wrong !

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

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Find the value of x for which line a is parallel to line b