Question

3. When data are discrete, we can construct a frequency distribution in which each possible value of the variable forms a class. The following table and histogram presents the results of a hypothetical survey in which 1000 adult women were asked how many children they had.
Number of children Frequency
0 435
1 175
2 222
3 112
4 38
5 9
6 7
7 0
8 2

Answer 1

$$\def\arraystretch{1.5} \begin{array}{c:c:c:c} \hline \begin{matrix} Class \\ Limits \end{matrix} & \begin{matrix} Class \\ Boundaries \end{matrix} &\begin{matrix} Frequency \\ \end{matrix} &\begin{matrix} Relative \\ Frequency \end{matrix} \\ \hline -0.5\div0.5 & 0 & 435 &0.435 \\ \hline 0.5\div1.5 & 1 & 175 &0.175 \\ \hline 1.5\div2.5 & 2 & 222 &0.222 \\ \hline 2.5\div3.5 & 3 & 112 &0.112 \\ \hline 3.5\div4.5 & 4 & 38 &0.038 \\ \hline 4.5\div5.5 & 5 & 9 &0.009 \\ \hline 5.5\div6.5 & 6 & 7 & 0.007\\ \hline 6.5\div7.5 & 7 & 0 & 0\\ \hline 7.5\div8.5 & 8 & 2 & 0.002\\ \hline \end{array}$$