Question

2.
From the following data, find Q.D. and coefficient of Q.D..
marks of more than:
80
70
60
50
40
30
20
No of students :
0
7
18
40
30
63
70
​

Answer 1

Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. ... Evidence. Experiment and/or observation as benchmarks for testing hypotheses.

Answer 2

Step-by-step explanation:

i need step by step explanation