Question

Closed circles are arranged vertically over the numbers on the number line. The following data are shown: 2 states, no dots; 3 states, 3 dots; 4 states, 4 dots; 5 states, 1 dot; 6 states, 2 dots; 7 states, 1 dot; 8 states, 2 dots; and 9 states, 0 dots.


Estimate the mean of the data in the dot plot.

(1 point)
Responses

The mean number of states visited is 6.
The mean number of states visited is 6.

The mean number of states visited is 2.
The mean number of states visited is 2.

The mean number of states visited is 4.
The mean number of states visited is 4.

The mean number of states visited is 5.
The mean number of states visited is 5.

Answer 1

Mean = (3·3 + 4·4 + 1·5 + 2·6 + 1·7 + 2·8) / (3+4+1+2+1+2) = 65 / 13 = 5.

So the mean number of states visited is 5.