दिलेल्या संख्येचे चल शोधा: 36, 28, 45 आणि 51.

  1. 63.5
  2. 68.5
  3. 71.5
  4. 76.5

Answer (Detailed Solution Below)

Option 4 : 76.5
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मध्य म्हणजे दिलेल्या संख्यांची सरासरी आहे,

⇒ मध्य = (36 + 28 + 45 + 51) / 4 = 160/4 = 40

प्रत्येक पद आणि मध्य दरम्यान फरकांच्या वर्गांच्या सरासरीने चले मोजली जाते,

⇒ चल = [(36 - 40)2 + (28 - 40)2 + (45 - 40)2 + (51 - 40)2]/4

= [16 + 144 + 25 + 121] / 4 = 306/4 = 76.5

∴ दिलेल्या संख्येचे चल= 76.5
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