Question

Explain the term Dispersion and name the usual methods of measurin
dispersion. Which measure of dispersion is the best and how?
To check the quality of two brands of light bulbs, their life in burning hours wa
estimated as under for 100 bulbs of each brand.
0-50
15
50-100 100-150
20 18
150-200
25
200-250
22
Life (in hrs)
No. Brand
of А
bulbs Brand
B
2.
8
60
25
5
(i) Which brand gives higher life?
(ii) Which brand is more dependable?​

Answer 1

Answer:

I think i don't know this answer sorry