The chart shows the average time spent reading per day for students in an 8th grade class. The line plot is titled minutes of reading per day, and the horizontal axis is labeled minutes of reading per day. There are 5 dots at 30, 1 dot at 33, 5 dots at 35, 1 dot at 36, 1 dot at 37, 3 dots at 40, 1 dot at 44, one dot at 46, 1 dot at 47, and 1 dot at 50. Which of the following describes this data set? Categorical and bivariate Categorical and univariate Numerical and bivariate Numerical and univariate