Question

The data set from England and Wales also notes for each town whether it was south or north of Derby. Here are some summary statistics and a comparative boxplot for the two regions. Summary of Mortality Group Count Mean Median StdDev North 34 1631.59 1631 138.470 South 27 1388.85 1369 151.114 Two boxplots. d a) What is the overall mean mortality rate for the two regions

Answer 1

the overall mean mortality rate for the two regions is 1524.15

Explanation:

Given that;

Summary of Mortality

Group Count Mean Median Std-Dev

North 34 1631.59 1631 138.470

South 27 1388.85 1369 151.114

the overall mean mortality rate for the two regions = ?

first we determine number of deaths in the North;

⇒ count × mean = 34 × 1631.59 = 55,474.06

Next, number of deaths in the South

⇒ count × mean = 27 × 1388.85 = 37,498.95

so, mortality rate for the two region will be;

⇒ (55,474.06 + 37,498.95) / ( 34 + 27 )

= 92,973.01 / 61

= 1,524.1477 ≈ 1524.15

Therefore, the overall mean mortality rate for the two regions is 1524.15