Question

A census revealed the following figures of the blind and the insane in two age groups

in a certain population:

Age-Group of 15-25

years

Age-Group of over 25

years

Total population 2,70,000 1,60,000

Number of blind 1000 2000

Number of insane 6000 1000​

Answer 1

Answer:

Step-by-step explanation:

Pearson correlation coefficient

Measure of associates , in statistic is coefficients used to quantify a relationship between two or more variables. strength of the association between two variable .

a) obtain a measure of the association between blindness and insanity in each of the age  groups.

Relatively risk would be

For the age group 15 -25 years = (1000 / 270000) (6000/270000) = 6

For the age group over 25 years = (2000/160000)(1000/160000) = 2