Question

Calculate arithmetic mean from the following data using step deviation method:
15-20
20-25 25-30
25-30 30-35
35-40
Classes: 0-5
Freq: 8
5-10 10-15
7 6
9
4
6
7
3​

Answer 1

Answer:

Bryophytes are an informal division that consists of 3 groups of non-vascular plants, namely mosses, liverworts, and hornworts. Prominent bryophytes characteristics are the absence of true roots stems and leaves. Furthermore, rhizoids perform the function of roots, essentially anchoring the plants into the surface.