Question

A museum is a place where old relics are kept for public display. A visit to the museum imparts us knowledge about the history, civilization, culture, lifestyle, architecture and art of the country. A group of 71 people visited the National Museum in Delhi on a certain day. The following table shows their ages : | Age (in years) | Number of Persons | |----------------|-------------------| | Less than 10 | 3 | | Less than 20 | 10 | | Less than 30 | 22 | | Less than 40 | 40 | | Less than 50 | 54 | | Less than 60 | 71 |

A museum is a place where old relics are kept for public display. A visit to the museum imparts us knowledge about the history, civilization, culture, lifestyle, architecture and art of the country. A group of 71 people visited the National Museum in Delhi on a certain day. The following table shows their ages:

Find the sum of the lower limit of modal class and the upper limit of the median class in the following distribution :

The frequency distribution given below shows the weight of 40 students of a class. Find the median weight of the students. | Weight (in kg) | Number of Students | |----------------|--------------------| | 40 – 45 | 9 | | 45 – 50 | 5 | | 50 – 55 | 8 | | 55 – 60 | 9 | | 60 – 65 | 6 | | 65 – 70 | 3 |