1) which of the following will give a negative correlation?
a) as time goes on, the number of endangered elephants decreases
b) as speed decreases, the number of accidents decreases
c) as time goes on, the height of a baby increases
d) as time goes on, the height of the plant remains the same
2) brian made a scatter plot and drew in a line of best fit. the equation of his line was
y = -x + 120, where x represents the number of hours spent exercising in a week and y
represents weight. if someone were to spend 12 hours working out this week, use brian's
line of best fit to predict a reasonable weight.
a) 120
b) 96
c) 114
d) 216