The following table gives the distribution of the totalpopulation and

1.	The following table gives the distribution of the totalpopulation and those who are blind among them. Find out if there is any relation between age and blindness : Age Population (’000) No. of Blinds 0—10 150 90 10—20 90 63 20—30 50 50 30—40 32 40 40—50 20 30 50—60 12 30 60—70 5 20 70—80 2 12
Answer» Given : distribution of the total population and those who are blind among them To Find : is there any relation between age and blindness Solution: Age Population (’000) No. of Blinds Blinds % 0—10 150 90 0.06 10—20 90 63 0.07 20—30 50 50 0.1 30—40 32 40 0.125 40—50 20 30 0.15 50—60 12 30 0.25 60—70 5 20 0.4 70—80 2 12 0.6 Linear y = 0.007x - 0.061 R² = 0.816 ( not Bad but not very good) Quadratic y = 0.000x² - 0.005x + 0.108 R² = 0.983 R² value is close to 1. for Quadratic function hence Quadratic relation exist between age and Blind % We can further go for CUBIC relations as well that would be much closer. y = 3E-06x³ - 0.000x2 + 0.004x + 0.040 R² = 0.998 Learn More: Marquis wrote the linear REGRESSION equation y = 1.245 x minus ... brainly.in/question/30151914 What is the regression coefficient bxy from the following details X = 7 ... brainly.in/question/29228195

The following table gives the distribution of the totalpopulation and those who are blind among them. Find out if there is any relation between age and blindness : Age Population (’000) No. of Blinds 0—10 150 90 10—20 90 63 20—30 50 50 30—40 32 40 40—50 20 30 50—60 12 30 60—70 5 20 70—80 2 12

Answer»

Given : distribution of the total population and those who are blind among them

To Find : is there any relation between age and blindness

Solution:

Age Population (’000) No. of Blinds Blinds %

0—10 150 90 0.06

10—20 90 63 0.07

20—30 50 50 0.1

30—40 32 40 0.125

40—50 20 30 0.15

50—60 12 30 0.25

60—70 5 20 0.4

70—80 2 12 0.6

Linear

y = 0.007x - 0.061

R² = 0.816 ( not Bad but not very good)

Quadratic

y = 0.000x² - 0.005x + 0.108

R² = 0.983

R² value is close to 1. for Quadratic function

hence Quadratic relation exist between age and Blind %

We can further go for CUBIC relations as well that would be much closer.

y = 3E-06x³ - 0.000x2 + 0.004x + 0.040

R² = 0.998

Learn More:

Marquis wrote the linear REGRESSION equation y = 1.245 x minus ...

What is the regression coefficient bxy from the following details X = 7 ...