Question

find standard deviation from the following data class0-4 4-8 8-12 12-16 16-20 frequency 2,3,10,3,2​

Answer 1

Answer:

Air is the invisible mixture of gases that surrounds the Earth. Air contains important substances, such as oxygen and nitrogen, that most species need to survive .

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Answer 2

Answer:

this is answer

Step-by-step explanation:

Air is the invisible mixture of gases that surrounds the Earth. Air contains important substances, such as oxygen and nitrogen, that most species need to survive. ... Standard Dry Air is made up of nitrogen, oxygen, argon, carbon dioxide, neon, helium, krypton, hydrogen, and xenon.