यदि   = 20 और ,, r = 0.5 है, तो समाश्रयण रेखा समीकरण ज्ञात कीजिए। 

  1. y = 5x + 5
  2. y = 0.25x - 5
  3. y = -0.25x - 5
  4. y = 0.25x + 5

Answer (Detailed Solution Below)

Option 4 : y = 0.25x + 5
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Detailed Solution

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संकल्पना:

जहाँ  = x का मानक विचलन;  = y का मानक विचलन 

x पर समाश्रयण रेखा y को  के रूप में ज्ञात किया गया है। 

गणना:

 x पर समाश्रयण रेखा y को  के रूप में ज्ञात किया गया है। 

y – 10 = 0.25(x - 20)

y – 10 = 0.25x - 5

y = 0.25x – 5 + 10

y = 0.25x + 5

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