A line of best fit is $\hat{y} = 5x + 12$. What does the slope of 5 represent?

Each one-unit increase in $x$ predicts about a 5-unit increase in $y$

A correlation coefficient of $r = 0.92$ indicates:

A strong positive linear association

A lurking variable (cold weather)

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

A box plot has a long whisker on the left and the median pushed toward the upper quartile. The distribution is:
For the data $5, 7, 8, 8, 10, 12, 18$ , what is the median?
What is the mean of $4, 6, 7, 9, 24$ ?
A data set of incomes includes a few extremely high earners. Which measure best represents a typical income?
A data set has Q1 = 15 and Q3 = 35. What is the interquartile range?
In a two-way table, dividing a single cell by the grand total gives which relative frequency?
Of 50 surveyed people, 30 own a pet. What is the marginal relative frequency of pet owners?
Of 40 students who ride the bus, 10 are freshmen. The conditional relative frequency of freshmen among bus riders is:
A scatter plot shows points rising from lower left to upper right in a tight band. The association is:
A line of best fit is $\hat{y} = 5x + 12$ . What does the slope of 5 represent?
A correlation coefficient of $r = 0.92$ indicates:
Sales of winter coats and hot-chocolate purchases are positively correlated. This is best explained by: