Question

Every year we celebrate Mother's Day and Women's day to show our love and respect to give
importanceto women in our lives. But even today there is a major chunk of women in India
who are deprived of their basic rights and needs regarding their health issues.This year on the occasion of International Women's Day 2020, on 8 March, a health check-upcamp for women had been organised in a School of Odisha. Along with the check-up oftheirother healthproblems, their heart beats per minute were also checked.The table given below shows the data of the number of heart beats per minute recorded for 50women.
No.of heartbeats
65-68 68 - 71. 71 - 74 74 - 77 77 - 80 80-83 83 - 86

No. of women
5. 7. 5. 15. 8. 7. 3


1.what is the mefian class of the above data?
2.what is the lower limit of modal class?
3.what is the sum of lower limit of median class and modal class?
4.class mark of the group into which least number of wimen belong to?
​

Answer 1

Answer:

1. median class of above data is74-77

2. lower limit of modal class is 74

Answer 2

Answer:

Laws of refraction state that:

The incident ray refracted ray, and the normal to the interface of two media at the point of incidence all lie on the same plane. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. This is also known as Snell's law of refraction.

me Aruhi my intro is in my questions