Home
Class 10
MATHS
Mean of 100 items is 48 and their standa...

Mean of `100` items is `48` and their standard deviation is `10`. Find the sum of all the itmes and the sum of the squares of all items.

Text Solution

Verified by Experts

The correct Answer is:
`240400`
Promotional Banner

Topper's Solved these Questions

  • STATISTICS AND PROBABILITY

    FULL MARKS|Exercise Unit Exercise|12 Videos

  • SOLVED PAPER 08 (UNSOLVED)

    FULL MARKS|Exercise Part-IV|3 Videos

  • TRIGONOMETRY

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED (III)|17 Videos

Similar Questions

Explore conceptually related problems

Find the sum of all odd integers less than 450.

If the mean of 100 observations is 50 and their standard deviations is 5,than the sum of all squares of all the observations is

The mean of 100 observations is 40 and their standard deviation is 3. The sum of square of all observation is ____.

Find the sum of all even number between 1 to 350.

Mean of 10 observations is 50 and their standard deviation is 10 If each observation is subtracted by 5 and then divided by 4, then the new mean and standard deviation are

Find the sum of all 11 term of an AP whose middle most term in 30.

Find the mean and standard deviation for the following data.

Find four number in an A.P. whose sum is 20 and sum of their squares is 120.

The sum of all deviations of the data from its mean is

FULL MARKS-STATISTICS AND PROBABILITY-Additional question solved
  1. The standard deviation of 20 observations is sqrt(5). If each observat...

    Text Solution

    |

  2. Calculate the variance standard deviation of the following data 38,40,...

    Text Solution

    |

  3. Mean of 100 items is 48 and their standard deviation is 10. Find the s...

    Text Solution

    |

  4. If n=10, barx=12, and sumx^(2)=1530, then calculate the coefficient of...

    Text Solution

    |

  5. If the coefficient of variation of a collection of data is 57 and its ...

    Text Solution

    |

  6. Find the standard deviation and the variance of first 23 natural numbe...

    Text Solution

    |

  7. Find the coefficient of variation of the following data : 18,20,15,12,...

    Text Solution

    |

  8. Three rotten eggs are mixed with 12 good ones. One egg is chosen at ra...

    Text Solution

    |

  9. Two coins are tossed together. What is the probaility of getting at mo...

    Text Solution

    |

  10. A number is selected at random from integers 1 to 100. Find the probab...

    Text Solution

    |

  11. Three dice are thrown simultaneously . Find the probability of getting...

    Text Solution

    |

  12. If P(A)=(1)/(2), P(B)=(7)/(10), P(AuuB)=1, find (i) P(AnnB), (ii) P(A'...

    Text Solution

    |

  13. The man of the following frequency distribution is 53 and the sum of a...

    Text Solution

    |

  14. Calculate the standard deviation of the following data.

    Text Solution

    |

  15. The time (in seconds) taken by a group to walk across a pedstrain cros...

    Text Solution

    |

  16. The mean and standard deviation of 20 items are found to be 10 and 2 r...

    Text Solution

    |

  17. Calculate the coefficient of variationof the following data : 20,18,32...

    Text Solution

    |

  18. The marks scored by two students A, B in a class are given below. ...

    Text Solution

    |

  19. If for distribution sum(x-7)=3, sum(x-7)^(2)=57 and total number of it...

    Text Solution

    |

  20. Two unbiased dice are rolled once. Find the probaility of getting. (...

    Text Solution

    |