2. Breast cancer has been found to be the second leading cause of death among women in the
U.S. Data on the number of deaths due to breast cancer in Michigan from 2011 to 2015 are
summarized in the table below: [Source: Michigan Department of Health and Human
Services, (November 30, 2017). Invasive Breast Cancer Incidence & Mortality Trends for
Females Michigan Residents, 1985-2015. Retrieved from:
https://www.mdch.state.mi.us/pha/osr/Cancer/stateinc.asp?CDxID=IncTrendsBreast ]
Year
2011 2012 2013 2014 2015
Number of Deaths Due to Breast Cancer 1426 1424 1384 1460 1347
Complete the table below and calculate the standard deviation of number of deaths due
to breast cancer in the random sample.
X =
X₁
1426
1424
1384
1460
1347
ΣΧ;
n
=
(X₁-X) (x₁ - x)²
The value of the standard deviation is:
SSx =
Dr