Maharashtra State BoardHSC Arts 12th Board Exam
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Choose the correct option from the given alternative: Find expected value of and variance of X for the following p.m.f. X -2 -1 0 1 2 P(x) 0.3 0.4 0.2 0.15 0.25 - Mathematics and Statistics

MCQ
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Choose the correct option from the given alternative:

Find expected value of and variance of X for the following p.m.f.

X -2 -1 0 1 2
P(x) 0.3 0.4 0.2 0.15 0.25

Options

  • 0·85

  • – 0·35

  • 0·15

  • – 0·15

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Solution

Find expected value of and variance of X for the following p.m.f.

X -2 -1 0 1 2
P(x) 0.3 0.4 0.2 0.15 0.25

= – 0·35

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APPEARS IN

Balbharati Mathematics and Statistics 2 (Arts and Science) 12th Standard HSC Maharashtra State Board
Chapter 7 Probability Distributions
Miscellaneous Exercise | Q 10 | Page 242
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