Question
15.14
15.14 Global warming. Here are annual average global temperatures for the last 21 years in degrees Celsius:
| Year |
1994 |
1995 |
1996 |
| Temperature |
14.23 |
14.35 |
14.22 |
| Year |
1997 |
1998 |
1999 |
| Temperature |
14.42 |
14.54 |
14.36 |
| Year |
2000 |
2001 |
2002 |
| Temperature |
14.33 |
14.45 |
14.51 |
| Year |
2003 |
2004 |
2005 |
| Temperature |
14.52 |
14.48 |
14.55 |
| Year |
2006 |
2007 |
2008 |
| Temperature |
14.50 |
14.49 |
14.41 |
| Year |
2009 |
2010 |
2011 |
| Temperature |
14.50 |
14.56 |
14.43 |
| Year |
2012 |
2013 |
2014 |
| Temperature |
14.48 |
14.52 |
14.59 |
You made a scatterplot of these data in Exercise 14.18 (page 332). The least-squares regression line is
What would you predict for the annual average temperature for 2014 based on this line? How accurate is your prediction?