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3
Q:

The variance of a set of data is 169. Then the standard deviation of the data is

 

A) +-13 B) 13
C) 69 D) 84.5

Answer:   B) 13



Explanation:
Subject: Probability - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
Related Questions
Q:

Which of the following questions is a statistical question?

A) Where do the professional sports leagues play?   B) How many professional sports leagues are there?
C) How many hours do the student-athletes at your school spend each week training for a sports league? D) How many hours of professional training took place over the weekend?  
 
Answer & Explanation Answer: B) How many professional sports leagues are there?

Explanation:

A statistical question is a question that can be answered by collecting data that vary.

In the given options, How many professional sports leagues are there? is a statistical question. Here to answer this question, we have to collect data from the sources.

 

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2 548
Q:

What is the median of the following list of numbers

 

55, 53, 56, 59, 61, 69, and 31 ?

A) 55 B) 56
C) 59 D) 61
 
Answer & Explanation Answer: B) 56

Explanation:
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1 2314
Q:

The second statement is the ____ of the first.

 

1.  P ⇒ Q2.  ~Q ⇒ ~P

 

A) Converse B) Inverse
C) Contrapositive D) Contradiction
 
Answer & Explanation Answer: C) Contrapositive

Explanation:
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3 2855
Q:

If the standard deviation of a population is 4.5, what would be the population variance?

A) 20.25 B) 20
C) 9 D) 18
 
Answer & Explanation Answer: A) 20.25

Explanation:
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3 573
Q:

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

A) 10% B) 20%
C) 40% D) 60%
 
Answer & Explanation Answer: B) 20%

Explanation:
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4 684
Q:

The standard deviation of the set {10, 11, 12, 9, 8} is

A) 1 B) √2
C) 2 D) 2√2
 
Answer & Explanation Answer: B) √2

Explanation:
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5 781
Q:

The mean of distribution is 11 and the standard deviation is 5. What is the value of the coefficient variation?

A) 45.45% B) 35.35%
C) 25.25% D) 55.55%
 
Answer & Explanation Answer: A) 45.45%

Explanation:
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0 688
Q:

If the standard deviation of a population is 7, what would be the population variance?

A) 14 B) 21
C) 49 D) 28
 
Answer & Explanation Answer: C) 49

Explanation:
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1 520