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

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 ENGLISH|Exercise Exercise 14a|10 Videos
  • STATISTICS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISE 14B|13 Videos
  • STATISTICS

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise|12 Videos
  • QUADRILATERALS

    NAGEEN PRAKASHAN ENGLISH|Exercise Revision Exercise (long Answer Questions)|5 Videos
  • SURFACE AREA AND VOLUME

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

Similar Questions

Explore conceptually related problems

The median of a set of nine distinct observations is 20.5. If each of the last four observations of the set is increased by 2, then the median of the new set is

The median of a set of nine distinct observations is 20.5. If each of the last four observations of the set is increased by 2, then the median of the new set is

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

The standard deviation of a distribution is 30. If each observation is increased by 5, then the new standard deviation will be

Mean of 100 observations is 50 and S.D. is 10. If 5 subtracted from each observation and then it is divided by 4, then the new mean and S.D. are

Let bar(x) and M.D be the mean and the mean deviation about bar(x) of n observations x_(p) , i=1, 2 . . . . . n . If each of the observation is increased by 5, then the new mean deviation about the new mean, respectively are .

Given the that variance of 50 observations is 18. If each of the 50 observations is increased by 2, then variance of new data is

There are 7 observations in the data and their mean is 11. If each observation is multiplied by 2, then the mean of new observations is (a) 11 (b) 13 (c) 22 (d) 5.5

If the median of 25 observations is 45 and if the observations greater than the median are increased by 4, then the median of the new data is

In a set of 2n distinct observations, each of the observations below the median of all the observations is increased by 5 and each of the remaining observation is decreased by 3 . Then the mean of the new set of observations

NAGEEN PRAKASHAN ENGLISH-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. The truth table given below represents

    Text Solution

    |

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

    Text Solution

    |

  5. The following table gives the life times of 400 neon lamps: (i) Repr...

    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

    |