Data Set 2-1
a Student Was Interested in the Structure $$\begin{array} { c r } X & f \\\hline 7 & 1 \\5 & 2 \\4 & 3 \\3 & 5 \\2 & 10 \\1 & 8\end{array}$$

Data Set 2-1
A student was interested in the structure of the families in the U.S. He sampled 29 of his 330 classmates and got the following answers to the question, "How many children are there in your family?"
3 , 1 , 2 , 2 , 4 , 2 , 1 , 2 , 2 , 1 , 3 , 2 , 3 , 3 , 4 , 2 , 2 , 1 , 3 , 5 , 1 , 1 , 3 , 5 , 2 , 4 , 7 , 1 , 2
-Referring to Data Set 2-1, the proper frequency distribution is:

A) $$\begin{array} { c r } X & f \\\hline 7 & 1 \\5 & 2 \\4 & 3 \\3 & 5 \\2 & 10 \\1 & 8\end{array}$$
B) $$\begin{array} { c r } X & f \\\hline 7 & 1 \\5 & 2 \\4 & 3 \\3 & 6 \\2 & 10 \\1 & 7\end{array}$$
C) $$\begin{array} { c r } \text { Class Interval } & f \\\hline 7 - 8 & 1 \\5 - 6 & 2 \\3 - 4 & 8 \\1 - 2 & 18\end{array}$$
D) None of the other alternatives are correct.