Home
Class 12
MATHS
The S.D. of the first n odd integers is ...

The S.D. of the first n odd integers is `sqrt(85)` , find n.

Text Solution

Verified by Experts

The correct Answer is:
n=16
Promotional Banner

Topper's Solved these Questions

  • MEASURES OF DISPERSION

    CHHAYA PUBLICATION|Exercise Exercise 3 Short answer type|23 Videos

  • MEASURES OF DISPERSION

    CHHAYA PUBLICATION|Exercise Exercise 3 (Long answer type questions)|22 Videos

  • MEASURES OF DISPERSION

    CHHAYA PUBLICATION|Exercise Exercise 3 (MCQ)|5 Videos

  • Measures of Central Tendency

    CHHAYA PUBLICATION|Exercise Exercise 2 C Very short answer type question|18 Videos

  • MEASURMENT OF TRIGONOMETRICAL ANGLES

    CHHAYA PUBLICATION|Exercise Sample Questions for Competitive Exams (Assertion -Reason Type)|2 Videos

Similar Questions

Explore conceptually related problems

The standard deviation of the first n odd positive integers is sqrt85 find n.

If SD of first n odd positive integers is sqrt133 , find n.

The S.D of the first n natural numbers is

The sum of the first 26 odd positive integers is

If the SD of the first numbers even integers be sqrt40 , then find numbers.

Prove that the variance of the first n odd positive integers is the same as the variance of the first n event positive integers.

The mean of first n odd natural numbers is (n^2)/(81) , then n equals___

If the mean of the first n odd natural numbers be numbers itself, then n is

If S_n=n P+(n(n-1))/2Q ,w h e r eS_n denotes the sum of the first n terms of an A.P., then find the common difference.

Write the converse of each of the following conditional statements : If n is an odd integer , then n is a prime integer .

CHHAYA PUBLICATION-MEASURES OF DISPERSION -Exercise 3 Very Short answer type
  1. Find the mean deviation about the A.M. of each of the following distri...

    Text Solution

    |

  2. Calculate the value of M.D. about the median of each of the following ...

    Text Solution

    |

  3. Calculate the value of M.D. about the median of each of the following ...

    Text Solution

    |

  4. Calculate the value of M.D. about the median of each of the following ...

    Text Solution

    |

  5. Calculate the value of M.D. about the median of each of the following ...

    Text Solution

    |

  6. Find the coefficuent of mean deviation (i) about mean (ii) about med...

    Text Solution

    |

  7. From the following array, find out the M.D. : 7,9,16,24,26,31,39

    Text Solution

    |

  8. Calculate the mean deviation about the A.M. of the following distribut...

    Text Solution

    |

  9. Find the value of S.D. of each of the following distributions : 4,5,...

    Text Solution

    |

  10. Find the value of S.D. of each of the following distributions : 4,8,...

    Text Solution

    |

  11. Find the value of S.D. of each of the following distributions : 1,2,...

    Text Solution

    |

  12. Find the Mean and S.D. of first n natural numbers

    Text Solution

    |

  13. The S.D. of the first n odd integers is sqrt(85) , find n.

    Text Solution

    |

  14. The S.D. calculated from a set of 32 observations is 5 . If the sum of...

    Text Solution

    |

  15. The standard deviation of a set of 30 items is 9.5 Find the standard d...

    Text Solution

    |

  16. The standard deviation of a set of 50 items is 8. Find the standard de...

    Text Solution

    |

  17. Prove that the standard deviation calculated from two values x(1) and ...

    Text Solution

    |

  18. Find the mean if coefficient of variation =5% and variance = 4.

    Text Solution

    |

  19. Find the coefficient of variation if the sum of squares of the deviati...

    Text Solution

    |

  20. If the co-efficient variance and standerd deviation of two frequency d...

    Text Solution

    |