Home
Class 12
MATHS
The S.D for the set of the first 'n' nat...

The S.D for the set of the first 'n' natural numbers is

A

`sqrt((n^(2)-1)/(4n))`

B

`sqrt((n^(2)+1)/(4n))`

C

`sqrt((n^(2)+1)/(1^(2)n))`

D

`sqrt((n^(2)-1)/(12))`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|40 Videos

  • STATISTICS

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|40 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

The AM of the squares of the first 'n' natural numbers is

The A . M first 'n' natural numbers is

The sum of the squares of the first n natural numbers is 285, while the sum of their cubes is 2025. Find the values of n.

The variance of first n natural number is:

The sum of cubes of the first n natural numbers is always a square number.

If the sum of the squares of the first n natural numbers exceeds theri sum by 330 , then find ndot

What is the sum of first n natural numbers ?

Variance of first 20 natural numbers is

The mean of first 10 natural numbers.

NEW JOYTHI PUBLICATION-STATISTICS-EXSERCISE
  1. If the S.D of 0,1,2,….9 is a, then the S.D of 10,11,12,…. 19 is

    Text Solution

    |

  2. The mode of the obeservations 3,5,1,7,9,1,12 is

    Text Solution

    |

  3. The AM of 1,2,4,8 …… 2^(n) is

    Text Solution

    |

  4. If a variable takes the values 0,1,2,…. N with frequencies 1,""^(n)C(1...

    Text Solution

    |

  5. The GM of 2, 2^(2),2^(3).......2^(n) is

    Text Solution

    |

  6. The mean mark in statistics of 100 students in a class was 72. The mea...

    Text Solution

    |

  7. The AM of the nnumbers x(1),x(2)......x(n) is M. If x(1) is replaced b...

    Text Solution

    |

  8. The MD from the median for the observed values -1,0,4 is

    Text Solution

    |

  9. If each observation of a raw data whose variance sigma^(2) is multipli...

    Text Solution

    |

  10. If each observation of a new data where variance is sigma^(2) increas...

    Text Solution

    |

  11. M.D for the observations a,a +d,a +2d, ……., a +2nd is

    Text Solution

    |

  12. The sum of squares of deviations of 10 observations taken from the mea...

    Text Solution

    |

  13. The median and S.D of a distribution are 20 and 4 respectively . If ea...

    Text Solution

    |

  14. If the S.D of a variate x is sigma , then the S.D of (ax+b)/(c ) where...

    Text Solution

    |

  15. If the S.D of x(1),x(2),x(3),........x(n) is 6, then the S.D of -x(1),...

    Text Solution

    |

  16. The S.D for the set of the first 'n' natural numbers is

    Text Solution

    |

  17. The standard deviation of the numbers 31,32,33, ……., 46,47 is

    Text Solution

    |

  18. The standard deviation of 3,7,11,15,19,23,27,31,35,39 is

    Text Solution

    |

  19. The variance of the population of the observation 100,101,102,103,99 i...

    Text Solution

    |

  20. The mean deviation of the first 19 natural numbers about the median is

    Text Solution

    |