Home
Class 9
MATHS
If each observation of the data is incre...

If each observation of the data is increased by `5`, then their mean

A

remains the same

B

becomes 5 times the original mean

C

is decreased by 5

D

is increased by 5

Text Solution

Verified by Experts

The correct Answer is:
D
If each observations of the data is increased by 5, then their mean is also by 5
Hence, (d) is the correct answer.
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    NAGEEN PRAKASHAN|Exercise Exercise 14a|10 Videos

  • STATISTICS

    NAGEEN PRAKASHAN|Exercise Exercise 14c|20 Videos

  • STATISTICS

    NAGEEN PRAKASHAN|Exercise Revision Exercise|10 Videos

  • QUADRILATERALS

    NAGEEN PRAKASHAN|Exercise Revision Exercise (long Answer Questions)|5 Videos

  • SURFACE AREA AND VOLUME

    NAGEEN PRAKASHAN|Exercise Revision Exercise (long Answer Questions)|10 Videos

Similar Questions

Explore conceptually related problems

The mean of 5 observations is 10. If each observation of the data is increased by 5, the new mean is :

If each observation of the data is decreased by 8 then their mean

If each observation of a data is incre ased by 7, then their mean

The mean of 20 observations is 12 . If each observation is increased by 5 , then find the new mean .

The mean of 7 observations is 7. If each observation is increased by 2, then the new mean is

If each observation is increased or decreased by a; then the mean is also increased by a.

NAGEEN PRAKASHAN-STATISTICS-Problems From NCERT/exemplar
  1. A study was conducted to find out the concentration of sulphur dioxide...

    Text Solution

    |

  2. The value of pi upto 50 decimal places is given below 3.141592653589...

    Text Solution

    |

  3. Given below are the seats won by different political parties in the po...

    Text Solution

    |

  4. The length of 40 leaves of a plant measured correct to one millimetre ...

    Text Solution

    |

  5. The following table gives the lifetimes of 400 neon lamps (i) Rep...

    Text Solution

    |

  6. The following table gives the distribution of students of two sections...

    Text Solution

    |

  7. The runs scored by two teams A and B on the first 60 balls in a cricke...

    Text Solution

    |

  8. A random survey of the number of children of various are groups playin...

    Text Solution

    |

  9. 100 surnames were randomly picked up from a local telephone directory ...

    Text Solution

    |

  10. The mean of five numbers is 30. If one number is excluded, their mean ...

    Text Solution

    |

  11. If the mean of the observation x, x+3, x+5, x+7 and x+10 is 9, then me...

    Text Solution

    |

  12. The mean deviation for n observations x1, x2, , xn from their mean ...

    Text Solution

    |

  13. If each observation of the data is increased by 5, then their mean

    Text Solution

    |

  14. Let barx be the mean of x(1), x(2), ………, x(n) and bary be the mean of ...

    Text Solution

    |

  15. If barx is the mean of x(1), x(2), …………., x(n), then for a ne 0, the m...

    Text Solution

    |

  16. If barx1,barx2,barx3,...barxn are the means of n groups with n1,n2,n3,...

    Text Solution

    |

  17. The mean of 100 observation is 50. If one of the observation which was...

    Text Solution

    |

  18. There are 50 numbers. Each number is subtracted from 53 and the mean o...

    Text Solution

    |

  19. The mean of 25 observation is 36. Out of these observations, if the me...

    Text Solution

    |

  20. The marks obtained (out of 100) by a class of 80 students are given be...

    Text Solution

    |