In the worksheet named 'Data' you will see realtime demand data for four parts. The time frame for the the demand is from January $2017$ to October $2018.$

Using the data answer the following questions:

$1.$ Using excel draw graphs representing the demand trend for all four parts.

$2.$ Looking at the graph for Part$-1$ what would be the forecasted range of demand in the months September $-$thru$-$ December of $2018.$

$3.$ What is the trend of demand for Part$-2?($show and lable the trend line on the demand graph$)$

$4.$ Calculate and graph the forecast for months November $2018$ to August $2019$ using $10$ month moving average for Part$-3.$ show calculatons.

$5.$ Calculate the mean and std$.$ deviation of Part$-4$ demand? Show calculations.