SECTION B $[50$ MARKS$]$

Answer ANY TWO $(2)$ questions in this section.

QUESTION $2(25$ Marks$)$

You are provided with the following information regarding the sales data of a Manufacturing company.

Month Sales

January $11$

February $14$

March $16$

April $10$

May $15$

June $17$

July $11$

August $14$

September $17$

October $12$

November $14$

December $16$

January $11$

February

You are required to:

$2\mathrm{.}1$ Calculate the $3$ month moving averages and deviations. $(20$ marks$)$

$2\mathrm{.}2$ Provide FIVE $(5)$ problems associated with the moving average. $(5$ marks$)$