Home
Class 12
MATHS
If the mean deviation of number 1,1+d, 1...

If the mean deviation of number 1,1+d, 1+2d,…., 1+100d from their mean is 255, then d is equal to

A

20

B

10.1

C

20.2

D

10

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    NEW JOYTHI PUBLICATION|Exercise EXSERCISE|34 Videos

  • SETS

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|21 Videos

  • STRAIGHT LINES

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|122 Videos

Similar Questions

Explore conceptually related problems

If the mean deviation about the median of the numbers a, 2a,……., 50a is 50, then |a| equals

1 D is equal to _______ .

The mean and S.D of 1, 2, 3, 4, 5, 6 is

The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is

The formula to find the mean deviation (overset-d) in Assumed mean method is ,

The number of function that can be defined from the set A = { a,b,c,d} into the set B= {1,2,3} is equal to

Consider the function f(x)=sqrt(2-x)+sqrt(1+x) . If d denotes the number of integers in the domain of f and ' r ' denotes the number of integers in the range of f , then (d+r) equals

Let D be the middle point of the side B C of a triangle A B Cdot If the triangle A D C is equilateral, then a^2: b^2: c^2 is equal to 1:4:3 (b) 4:1:3 (c) 4:3:1 (d) 3:4:1

If the mean and S.D of a data are 8 and 2 respectively then the C.V is ____.

NEW JOYTHI PUBLICATION-STATISTICS-QUESTIONS FROM COMPETITIVE EXAMS
  1. The mean of five numbers is 0 and their variance is 2. If three of tho...

    Text Solution

    |

  2. A batsman in his 16^(th) innings makes a score of 70 runs and thereby ...

    Text Solution

    |

  3. If the variance of 1,2,3,4,5,….., x is 10, then the value of x is

    Text Solution

    |

  4. Mean of 10 observations is 50 and their standard deviation is 10 If e...

    Text Solution

    |

  5. If sum(i=1)^(9)(x(i)-5)=9andsum(i=1)^(9)(x(i)-5)^(2)=45, then the sta...

    Text Solution

    |

  6. The standard deviation of 9,16,23,30,37,44,51 is

    Text Solution

    |

  7. In a class of 100 students there are 70 boys whose average marks in a ...

    Text Solution

    |

  8. In an experiment with 15 observation on x, the following results were...

    Text Solution

    |

  9. The median of a set of a set of 9 distinct observations is 20.5 . If e...

    Text Solution

    |

  10. Consider the following statements. (i) Mode can be computed from hi...

    Text Solution

    |

  11. In a series of 2n observations , half of them equal a and remaining ha...

    Text Solution

    |

  12. In a frequency distribution , the mean and median are 21 and 22 respec...

    Text Solution

    |

  13. Let x(1),x(2),…..x(n) be n observations such that sumx(i)^(2)=400andsu...

    Text Solution

    |

  14. Suppose a population A has 100 observations 101,102,….,200, and anothe...

    Text Solution

    |

  15. The average marks of boys in a class is 52 and that of girls is 42. .T...

    Text Solution

    |

  16. The mean of the numbers a,b,8,5,10 is 6 and the variance is 6.80 .Then...

    Text Solution

    |

  17. If the mean deviation of number 1,1+d, 1+2d,…., 1+100d from their mean...

    Text Solution

    |

  18. For two data sets , each of size 5, the variances are given to be 4 an...

    Text Solution

    |

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

    Text Solution

    |

  20. Let x(1),x(2),…..x(n) be n observations such that sumx(i)^(2)=400andsu...

    Text Solution

    |