Home
Class 11
MATHS
If each observation of a raw data whose ...

If each observation of a raw data whose variance is `sigma^2` is increased by `lambda` then the variance of the new set is

A

`sigma^2`

B

`lambda^2sigma^2`

C

`lambda+sigma^2`

D

`lambda^2+sigma^2`

Text Solution

Verified by Experts

The correct Answer is:
A
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

If each observation of a rew data, whose variance is sigma^2 is multiplied by lambda then the variance of the new set is

If each observation of a raw data whose variance is sigma is multiplied by h, then the variance of the new set is

The Mean of a set of numbers is overlinex . If each number is increased by lambda , then the mean of the new set is

Find the variance of 1, 2, 3, 4.

The median of a set of 9 distinct observations 20.5. If each of the largest 4 observation of the set is increased by 2, then the median of the new set

The mean of a set of observations is overlinex If observations is divided by alpha, alpha ne 0 , and then is increased by 10 then the mean of the new set is

The mean of a set of numbers is overlinex . If such numbers is multiplied by lambda , then the mean of the new set is

The variance of 20 observations is 5. If each observation is multiplied by 2, find the new variance of the resulting observations.

The variance of 2, 4, 6, 8, 10, is

The variance of 20 observations is 5. If each observation be multiplied by 2, then find the variance of the resulting observation.

PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
  1. If the standard deviation of 1, 2, 3, 4,…., 10 is sigma , then the sta...

    Text Solution

    |

  2. S.D. of numbers observation a1, a2, a3,…..an is sigma then the S.D. of...

    Text Solution

    |

  3. If each observation of a raw data whose variance is sigma^2 is increas...

    Text Solution

    |

  4. Let sigma be the standard deviation of n observations. Each of the n o...

    Text Solution

    |

  5. For a frequency distribution, standard deviation is computed by

    Text Solution

    |

  6. Mean of first n natural numbers is

    Text Solution

    |

  7. (x1-overlinex)+(x2-overlinex)+....+(xn-overlinex)=

    Text Solution

    |

  8. If the mean of the table is 8, then find the value of P.

    Text Solution

    |

  9. A factory employs 100 workers of whom 60 in the first shift and 40 wo...

    Text Solution

    |

  10. Geometric mean of 3, 9 and 27 is

    Text Solution

    |

  11. The median of the items 6, 10, 4, 3, 11, 22, 18, is

    Text Solution

    |

  12. If median = (mode + 2 mean ) Mean, then Mean is equal to

    Text Solution

    |

  13. The scores of a batsman in ten innings are : 38, 70, 48, 34, 42, 55, 6...

    Text Solution

    |

  14. The Standard Deviation of scores 1, 2, 3, 4, 5 is

    Text Solution

    |

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

    Text Solution

    |

  16. The A.M of the series 1, 2, 4, 8, 16…., 2^n is

    Text Solution

    |

  17. If the mean of the numbers x1, x2, x3,….xn is overlinex, then the mea...

    Text Solution

    |

  18. Mean of the first n terms of the A.P a,(a+d),(a+2d),…..is

    Text Solution

    |

  19. If mu is the mean of a distribution , then sumfi(yi-mu) is equal to

    Text Solution

    |

  20. If the mean of n observations 1^2, 2^2, 3^2,….n^2 is (46n)/(11) then ...

    Text Solution

    |