Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The table gives a car dealer’s weekly sales for a random sample of 26 weeks.

Week Cars Sold
1 1
2 1
3 4
4 2
5 4
6 10
7 8
8 5
9 9
10 6
11 2
12 5
13 6
14 5
15 7
16 1
17 4
18 6
19 8
20 9
21 2
22 5
23 9
24 5
25 3
26 3
The sample mean of cars sold per week is?