Statistics and Probability-Standard Deviation (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Math): Questions 1 - 2 of 2

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Question number: 1

» Statistics and Probability » Standard Deviation

Appeared in Year: 2014

MCQ▾

Question

Let Equation . A list of number Equation has mean Equation and standard deviation Equation . A new list of numbers Equation is made as follows: Equation and Equation for Equation . The mean and the standard deviation of the list are Equation and Equation . Then which of the following is necessarily true?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

» Statistics and Probability » Standard Deviation

Appeared in Year: 2013

MCQ▾

Question

Let Equation . A list of numbers Equation has mean Equation and standard deviation Equation . A new list of numbers is made as follows: Equation . The mean and the standard deviation of the new list are Equation . Which of the following is necessarily true? (Model Paper)

Choices

Choice (4) Response

a.

Equation many or may not be equal to Equation

b.

Equation

c.

Equation

d.

Equation

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