For the line of best fit $y = 3x + 10$, what does the slope 3 represent?

the predicted change in y per unit increase in x

A correlation coefficient of $r = 0.95$ indicates

a strong positive linear relationship

the variables are associated, but not necessarily causally

library visitors are not representative of all residents

12questions. Pick an answer and you'll see why right away.

What is the median of $3, 6, 8, 11, 14$ ?
A data set is $4, 5, 6, 7, 40$ . Which measure of center best represents the typical value?
A data set has minimum 5, $Q_1 = 12$ , median 18, $Q_3 = 25$ , maximum 40. What is the IQR?
A scatterplot's points fall from upper left to lower right in a tight band. The association is
In a two-way table, 15 students walk to school and pack lunch, 9 walk and buy lunch. How many students walk to school?
For the line of best fit $y = 3x + 10$ , what does the slope 3 represent?
A correlation coefficient of $r = 0.95$ indicates
A strong correlation between two variables means
A bag has 4 red, 3 blue, and 5 yellow marbles. What is $P(\text{blue})$ ?
A fair die is rolled. What is $P(\text{not a 4})$ ?
Two fair coins are flipped. What is the probability of two tails?
A survey about a town's library is taken only of people inside the library. Why might it be biased?