Chang wants to know if he is improving his skill cello. He created a scatter plot and drew a line of best fit.

Answer these questions showing your work plz

Which equation matches the graph shown ?

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