Sail E0 Webinar

MCQs

Total Questions : 155 | Page 4 of 16 pages
Question 31. If the third moment about mean is zero then distribution is_______________?
  1.    Mesokurtic
  2.    Positively Skewed
  3.    Symmetrical
  4.    Negatively Skewed
 Discuss Question
Answer: Option C. -> Symmetrical
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 32. Quartile Coefficient of skewness lies between______________?
  1.    0 and 1
  2.    -1 and +1
  3.    -1 and 0
  4.    None of these
 Discuss Question
Answer: Option B. -> -1 and +1
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 33. ____________ is used to criterion of consistency i.e for consistence performance?
  1.    Range
  2.    Standard Deviation
  3.    Coefficient of Variation
  4.    Mean Deviation
 Discuss Question
Answer: Option C. -> Coefficient of Variation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 34. Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
  1.    50
  2.    70
  3.    50/20
  4.    50-20 = 30
  5.    60
 Discuss Question
Answer: Option A. -> 50
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 35. If Y=−8X − 5 and SD of X is 3, then SD of Y is _______________?
  1.    8
  2.    3
  3.    5
  4.    24
  5.    None
 Discuss Question
Answer: Option D. -> 24
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 36. The standard deviation is always _________ than mean deviation?
  1.    Greater
  2.    Less
  3.    Equal
  4.    None
 Discuss Question
Answer: Option A. -> Greater
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 37. The variance of a constant is_______________?
  1.    Zero
  2.    Constant
  3.    a
  4.    None
 Discuss Question
Answer: Option A. -> Zero
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 38. Var(2X+3) is________________?
  1.    5 Var(X)
  2.    4 Var(X)
  3.    4 Var(X)+3
  4.    5 Var(X)+3
 Discuss Question
Answer: Option B. -> 4 Var(X)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 39. The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is______________?
  1.    20
  2.    5
  3.    2.5
  4.    5.5
  5.    0
 Discuss Question
Answer: Option C. -> 2.5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 40. For a symmetrical distribution approximately 68% of the cases are included between _________________?
  1.    X¯¯¯¯−S and X¯¯¯¯+S
  2.    X¯¯¯¯−2S and X¯¯¯¯+2S
  3.    X¯¯¯¯−3S and X¯¯¯¯+3S
  4.    None of these
 Discuss Question
Answer: Option A. -> X¯¯¯¯−S and X¯¯¯¯+S
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Chapter 3.1 : INTRODUCTION Chapter 3 : Sinter Plant SAIL E0 - GPOE/GPA 2024
Chapter 2.3 : COAL HANDLING PLANT - Set 1 Chapter 2 : Coke Ovens and Coal Chemicals SAIL E0 - GPOE/GPA 2024
Chapter 1.1 : INTRODUCTION Chapter 1 : Raw Material Handling Plant SAIL E0 - GPOE/GPA 2024
GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0
DSP Combined 1 Free Revision Test SAIL JO E-0