Need help on the answer to this qn:
Qn: In a statistical investigation, a researcher wants to find
out how a person's maximum walking speed varies with age. He
selects a random sample of 12 males of certain ages and measures
their individual maximum walking speeds. They have ages, t years and maximum walking speeds, w
m/s.
State, giving a reason, whether a regression line of
w on t or
t on w could
be used to estimate the age of a male who has a maximum walking speed of 2.65
m/s.
(There is no need to do any calculations)
My Ans: t on w because w is given (w=2.65 m/s) and is the
independent variable, while t is unknown and is the dependent
variable.
Ans given: w on t. t is the independent variable (?)
Can someone enlighten me? ty.