What conclusion can be determined from the dot plot below? A dot plot showing five dots above 9, six dots above 10, three dots above 11, and one dot above 12.

The number of observations is 10.
The median of the data set is 10.
The mean of the data set is 15.
The range of the data set is 12.The histogram below shows information about the number of books students read in a month:

A histogram is titled Monthly Reading, the horizontal axis is labeled Books, and the vertical axis is labeled Students. The range on the horizontal axis is 0 to 4, 5 to 9, and 10 to 14. The values on the vertical axis are from 0 to 10 at intervals of 1. The first bin goes to 4, the second bin to 8, the third bin to 2.

Which information is provided in the histogram?

The mean number of books read
The median number of books read
The number of students who read 4 books or fewer
The number of students who read 9 books or more