To study perception, a researcher selects a sample of participants (n = 12) and asks them to hold pairs of objects differing in weight, but not in size, one in each hand. The researcher asks participants to report when they notice a difference in the weight of the two objects. Below is a list of the difference in weight (in pounds) when participants first noticed a difference. Answer the following questions based on the data given in the table. Difference in Weight

4

8

9

5

12

7

6

15

10

4

8

8

1. State the following values for this set of data:
(a) Mean​​
(b) Median​​
(c) Mode(s)​