Chapter 9, Problem 2CS

To determine

To calculate: The actual accumulated empty seat miles for $2007$ using the observed data and compare the value predicted by the model.

Month	Empty Seat Miles (billions)	Month	Empty Seat Miles (billions)	Month	Empty Seat Miles (billions)	Month	Empty Seat Miles (billions)
$1$	$25$	$21$	$23$	$41$	$20$	$61$	$23$
$2$	$21$	$22$	$22$	$42$	$16$	$62$	$20$
$3$	$18$	$23$	$21$	$43$	$15$	$63$	$17$
$4$	$21$	$24$	$21$	$44$	$18$	$64$	$17$
$5$	$21$	$25$	$26$	$45$	$21$	$65$	$18$
$6$	$18$	$26$	$23$	$46$	$21$	$66$	$13$
$7$	$19$	$27$	$20$	$47$	$19$	$67$	$14$
$8$	$19$	$28$	$19$	$48$	$20$	$68$	$15$
$9$	$25$	$29$	$21$	$49$	$22$	$69$	$21$
$10$	$24$	$30$	$16$	$50$	$19$	$70$	$19$
$11$	$24$	$31$	$16$	$51$	$17$	$71$	$19$
$12$	$21$	$32$	$19$	$52$	$17$	$72$	$21$
$13$	$26$	$33$	$22$	$53$	$17$	$73$	$23$
$14$	$22$	$34$	$21$	$54$	$14$	$74$	$21$
$15$	$22$	$35$	$22$	$55$	$14$	$75$	$17$
$16$	$22$	$36$	$23$	$56$	$18$	$76$	$18$
$17$	$19$	$37$	$24$	$57$	$21$	$77$	$18$
$18$	$16$	$38$	$22$	$58$	$20$	$78$	$15$
$19$	$15$	$39$	$18$	$59$	$19$	$79$	$15$
$20$	$17$	$40$	$20$	$60$	$20$	$80$	$16$