Home
Class 10
MATHS
The mean of 20 items of a data is 5 and ...

The mean of 20 items of a data is 5 and if each item is multiplied by 3, then the mean will be

A

5

B

10

C

15

D

20

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SITUATION REACTION TEST

    MCGROW HILL PUBLICATION|Exercise EXERCISE|15 Videos

  • SURDS AND INDICES

    MCGROW HILL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|33 Videos

Similar Questions

Explore conceptually related problems

The mean of ten items is 17 and if each item is increased by 5, then the new mean will be

The mean of 8 numbers is 25. If each number is multiplied by 2, the new mean will be

The median of a data is 20 . If each item is increased by 2 , find the new median .

The mean of 15 observation is 23. If each obsevation is multiplied 2, then new mean 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 11 (b) 13 22 (d) 5.5

The mean of 10 observations is 5. If 2 is added to each observation and then multiplied by 3, then what will be the new mean?

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

MCGROW HILL PUBLICATION-STATISTICS -MULTIPLE CHOICE QUESTIONS
  1. The average age of a group of 8 members is same as it was 3 years ago,...

    Text Solution

    |

  2. The mean of ten items is 17 and if each item is increased by 5, then t...

    Text Solution

    |

  3. The mean of 20 items of a data is 5 and if each item is multiplied by ...

    Text Solution

    |

  4. The numbers 3, 5, 6 and 4 have frequencies of x, x + 2, x -8 and x+ 6,...

    Text Solution

    |

  5. The weights of 9 apples are 50, 60, 65, 62, 67, 70, 64, 45, 48 grams ....

    Text Solution

    |

  6. The mean of all the factors of 12 is

    Text Solution

    |

  7. The arithmetic mean of 6, 10, x and 12 is 8 . The value of x is

    Text Solution

    |

  8. The mean of first 8 natural numbers is

    Text Solution

    |

  9. The mean of 6 numbers is 20. If one number is deleted, their mean is 1...

    Text Solution

    |

  10. The sum of the deviations of the variates 6, 8, 10, 16, 20, 24

    Text Solution

    |

  11. The mean of 20 numbers is 9. If 3 is added to every number what will b...

    Text Solution

    |

  12. The mean of 8 numbers is 25. If each number is multiplied by 2, the ne...

    Text Solution

    |

  13. The mean age of combined group of men and women is 35 years. If the me...

    Text Solution

    |

  14. The median of the first 12 prime numbers is

    Text Solution

    |

  15. Out of a total of 20 observations arranged is ascending order 10^(th) ...

    Text Solution

    |

  16. Mode of the distribution is that value of the variate for which the i...

    Text Solution

    |

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

    Text Solution

    |

  18. Class mark of class interval 60–70 is

    Text Solution

    |

  19. Class mark of a particular class is 6.5 and class size is 3, then clas...

    Text Solution

    |

  20. The mean of the factors of 24 is:

    Text Solution

    |