Home
Class 11
MATHS
All the students of a class perfomed poo...

All the students of a class perfomed poorly in mathematic. The techer decided to give grace marks of 10 to every student Which of the following statistical measure will not change even after the grace marks were given ?

A

median

B

mode

C

mean

D

variance

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    PATHFINDER|Exercise QUESTION BANK|45 Videos

  • STRAIGHT LINE

    PATHFINDER|Exercise QUESTION BANK |25 Videos

Similar Questions

Explore conceptually related problems

All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given ?

The marks obtained in mathematics by 30 students of Class X of a certain scholl are given in table the below. Find the mean of the marks obtained by the students.

The mean and standard deviation of marks obtained by 50 students of a class in three subjects, Mathematics, Physics and Chemistry are given below: {:("Subject","Mathematics","Physics","Chemistry"),("Mean",42,32,40.9),("Standard deviation",12,15,20):} Which of the three subjects shows the highest variability in marks and which shows the lowest?

The marks of 30 students of a class of 10 in a test (out of 75) are given below 40, 21, 50, 37, 42, 37, 38, 42, 49, 52, 38, 53, 57, 47, 29, 59, 61, 33, 17, 17, 39, 44, 42, 39, 14, 7, 27, 19, 54, 51. Form a frequency table with equal class intervals.

PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
  1. Which of the following is different from the others?

    Text Solution

    |

  2. Which of the following is different from the others?

    Text Solution

    |

  3. In each of the statements pto~q~rtoq and p is true, then

    Text Solution

    |

  4. Additive identity of the Boolean algebra of logical statement is

    Text Solution

    |

  5. Multiplicative identity of the Boolean algebra of logical statements i...

    Text Solution

    |

  6. Let X be a non-empty set, then P(X)={A:AsubX} is a Boolean lattice w.r...

    Text Solution

    |

  7. Which of the following is true?

    Text Solution

    |

  8. Consider the 2-place Boolean function f :{0,1} rarr{0,1} defined by ...

    Text Solution

    |

  9. If x,y are any two elements of a Boolean lattice, then (x'+y')' is equ...

    Text Solution

    |

  10. The mean of the data set comprising of 16 observations is 16 . If one ...

    Text Solution

    |

  11. The variance of first 20 natural numbers is

    Text Solution

    |

  12. The negation of ~svee(~rwedges) is equivalent to

    Text Solution

    |

  13. the variance of first 50 even natural numbers is ,

    Text Solution

    |

  14. The statement ~(pharr~q) is

    Text Solution

    |

  15. All the students of a class perfomed poorly in mathematic. The techer ...

    Text Solution

    |

  16. Statement I : (p^^∼q)∧(∼p^^q) is a fallacy. Statement II : (p→q)↔(∼q→...

    Text Solution

    |

  17. Let x1,x2,……,xn be n observations, and let barx be their arithimetic m...

    Text Solution

    |

  18. The negation of the statement "If I become teacher, then I will open ...

    Text Solution

    |

  19. If the mean deviation about the median of the numbers a, 2a,…50a is 50...

    Text Solution

    |

  20. Consider the following statements P : suman is brilliant, Q: suman ...

    Text Solution

    |