Problem $3$

Computing a tracking signal

Monthly attendance at the financial conferences for the past seven months. Determine if the forecast is working for this company.

Month

$($A$)$ Attendance

$($F$)$ Forecast

$($A$-$F$)$

Absolute $($A$-$F$)$

$1$

$38$

$2$

$35$

$3$

$48$

$4$

$57$

$46$

$30$

$25$

$32$

$27$

$51$

$50$

$48$

$32$

$35$

$[6]$

$5$

$6$

$7$