Question

According to the National Cancer Institute, breast cancer is the second leading cause of cancer death in women. The NCI’s annual SEER reports state that a US woman’s lifetime risk of developing breast cancer between 2002 and 2006 is approximately as follows: Year Lifetime Breast Cancer Risk 2002 12.7% 2003 12.3% 2004 12.0% 2005 12.1% 2006 12.4% = 2004 = 12.3% Sx = 1.58 Sy = 0.27% r = -0.462 The intercept of the regression equation that predicts lifetime breast cancer risk using year is ____.

Answer 1

We have to find the intercept of the regression equation that predicts lifetime breast cancer risk using year.

Formula is

a: Intercept

b: Slope

	x	y
	2002	12.7
	2003	12.3
	2004	12
	2005	12.1
	2006	12.4
Total	10020	61.5

= 12.3 + 0.08*2004 = 172.62

The intercept of the regression equation that predicts lifetime breast cancer risk using year is 172.62