Question

Classify the data given below as primary or secondary data:

 Shoe size of 10 students of class 9.

The blood groups of any 20 of your friends.

 Number of members in the families of your classmates.

 Marks obtained by 30 students in a mathematics test.

 Number of plants planted by 100 schools during Van Mahotsava.​

Answer 1

Answer:

Primary data are Number of members in the families of your classmates and number of plants planted by 100 schools during Van Mahotsava

Secondary data are shoe size of 10 students of class 9,The blood groups of any 20 of your friends and Marks obtained by 30 students in a mathematics test hope this will help you