Dean describes the data in the histogram as having a cluster from 30–60 and a peak at 40–49. He says the intervals 0–9 and 80–89 show a 0 frequency. Lastly, he says that the graph is not symmetrical. Why is Dean incorrect? The graph does not show a peak.
There is no cluster in this data set.
The graph does not show intervals with 0 frequency.
The graph is symmetrical.

what is the graph

step-by-step explanation:

69.64%

step-by-step explanation:

answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.