Problem $6-01($Algorithmic$)$

Consider the following time series data.

$\backslash$table$[[$Week$,1,2,3,4,5,6],[$Value$,18,14,15,10,19,14]]$

Using the naive method $($most recent value$)$ as the forecast for the next week, compute the following measures of forecast accurac$)$

a$.$ Mean absolute error. If required, round your answer to one decimal place.

b$.$ Mean squared error. If required, round your answer to one decimal place.

c$.$ Mean absolute percentage error. If required, round your intermediate calculations and final answer to two decimal places.

$x\%$

d$.$ What is the forecast for week $7?$ If required, round your answer to two decimal place.