7(3)
8(1)
9(2)
10(1)
11(0)
12(1)
A researcher asked people how many letters they had written in the past year and recorded the results
0(4)
1(7)
2(6)
3(0)
4(2)
5(5)
6(8)
1 answer
0(4)
1(7)
2(6)
3(0)
4(2)
5(5)
6(8)
1 answer