The process of arranging data into homogeneous groups or classes according to some common characteristics is known as: MCQ with Answer and Explanation

Explanation:
Mode identifies the most frequent category, so it can be used for nominal qualitative data.

Explanation:
Natural increase = CBR - CDR = 30-8 = 22 per 1000.

Explanation:
Ordered; n=9, median is 5th value = 5? Wait: 1st:2, 2nd:2, 3rd:3, 4th:4, 5th:5, so median=5. But option A is 5. I need even number to get 4.5. I'll adjust: {2,2,3,4,5,5,5,6} n=8, median=(4+5)/2=4.5. So I'll change to 8 values.