Families at a school in Namibia were surveyed, and the number of children in each family was recorded. The following data shows the results of the survey.

\begin{tabular}{|l|l|l|l|l|l|l|l|l|l|}
\hline 1 & 2 & 3 & 2 & 3 & 1 & 4 & 2 & 2 & 3 \\
\hline 2 & 4 & 2 & 2 & 1 & 2 & 2 & 3 & 3 & 2 \\
\hline 3 & 3 & 2 & 1 & 2 & 3 & 4 & 2 & 4 & 1 \\
\hline 2 & 2 & 4 & 2 & 3 & 1 & 3 & 2 & 2 & 4 \\
\hline 3 & 3 & 2 & 3 & 2 & 3 & 2 & 4 & 5 & 2 \\
\hline 2 & 2 & 4 & 2 & 3 & 2 & 5 & 2 & 2 & \\
\hline
\end{tabular}

(a) Copy and complete the table:

\begin{tabular}{|c|l|l|l|}
\hline \begin{tabular}{c}
Number of \\
children
\end{tabular} & Tally & Frequency & \begin{tabular}{c}
Relative \\
Frequency
\end{tabular} \\
\hline 1 & & & \\
\hline 2 & & & \\
\hline 3 & & & \\
\hline 4 & & & \\
\hline 5 & & & \\
\hline 6 & & & \\
\hline
\end{tabular}
[tex]$[4]$[/tex]

(b) Calculate the:
(i) mean
[tex]$[3]$[/tex]

(ii) mode
[tex]$[1]$[/tex]

(iii) median
[tex]$[2]$[/tex]

(c) The average Namibian family has 2.2 children. How does this compare to the national average?
[tex]$[2]$[/tex]

(d) The data set is skewed. Is the skewness positive or negative?
[tex]$[1]$[/tex]

(e) How has the skewness of the data affected the measures of the center of the data set?
[tex]$[2]$[/tex]