Home
Class 12
MATHS
Mean and variance of five observations a...

Mean and variance of five observations are `4` and `5.2` respectively. If three of these observations are `3, 4, 4` then find absolute difference between the other two observations (A) `3` (B) `7` (C) `2` (D) `5`

Promotional Banner

Topper's Solved these Questions

  • JEE MAIN

    JEE MAINS PREVIOUS YEAR ENGLISH|Exercise MATH|21 Videos

  • LIMITS AND DERIVATIVES

    JEE MAINS PREVIOUS YEAR ENGLISH|Exercise All Questions|5 Videos

Similar Questions

Explore conceptually related problems

The mean and variance of 7 observations are 7 and 22 respectively. If 5 of the observations are 2, 4, 10, 12, 14, then the remaining 2 observations are

The mean and variance of 7 observations are 8 and 16, respectively. If five of the observations are 2, 4, 10, 12, 14. Find the remaining two observations.

The mean and variance of eight observations are 9 and 9.25, respectively. If six of the observations are 6, 7, 10, 12, 12 and 13, find the remaining two observations.

The mean and variance of seven observations are 8 and 16 respectively. If five of these are 2,4,10,12 and 14, then find the remaining two observations.

The mean of five observations is 4 and their variance is 5.2. If three of these observations are 1,2 and 6, then the other two are

The mean and variance of 5 observations are respectively 4.4 and 8.24. If three observation are 1,2 and 4 then find the remaining two observations.

The mean of five observation is 4 and their variance is 2.8. If three of these observations are 2, 2 and 5, then the other two are

The mean of five observations is 4 and their variance is 5.2. If three of these observations are 2, 4 and 6, then the other two observations are :

The mean of five observations is 5 and their variance is 9.20. If three of the given five observations are 1,3 and 8, then a ratio of other two observations is

The mean and variance of 7 observation is 8 and 16. If five of the observations are 2, 4, 10, 12, 14. Find the remaining two observations.

JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-All Questions
  1. If the curve C is given by the relation y=x^2 +1. Then the area enclos...

    Text Solution

    |

  2. Find y(x), if it satisfies the following differential equation (dy)/(d...

    Text Solution

    |

  3. Mean and variance of five observations are 4 and 5.2 respectively. If ...

    Text Solution

    |

  4. There are m men and 2 women. Everyone plays two matches will all other...

    Text Solution

    |

  5. There are 60 students in a classes, out of which 40 opt for NCC, 30 op...

    Text Solution

    |

  6. Let f(x)=(1+m)x^2-2(1+3m)x+4(1+2m). Numbe of interval values of m for...

    Text Solution

    |

  7. The sum of coefficient of even powers of x in (x +sqrt(x^(3) - 1))^(6)...

    Text Solution

    |

  8. Let sin(alpha -beta) = (5)/(13) and cos(alpha + beta) = (3)/(5), then...

    Text Solution

    |

  9. The line x + y = n, n in N makes intercepts with x^(2) + y^(2) = 16. T...

    Text Solution

    |

  10. \'If you are born in India then you are citizen of India\'\' contrapos...

    Text Solution

    |

  11. Let A = [[cos alpha, -sin alpha],[sin alpha, cos alpha]] and A^(32) =...

    Text Solution

    |

  12. lim(x to 0) (sin^(2) x)/(sqrt(2)-sqrt(1+cos x))= (A) sqrt(2) (B) ...

    Text Solution

    |

  13. Find the area enclosed by the curves x^2=y , y=x+2,

    Text Solution

    |

  14. Find the mean of 43, 51, 50, 57 and 54.

    Text Solution

    |

  15. Show that the height of the cylinder of maximum volume that can be ...

    Text Solution

    |

  16. Using integration, find the area of the triangle formed by positive x-...

    Text Solution

    |

  17. if f(x) ={{:( sin x, xlt0),(cos x-|s-1|,x ge0):} then g(g) = f(|x|...

    Text Solution

    |

  18. Find area bounded by the curves x^(2)leylex+2

    Text Solution

    |

  19. In the expansion at ((2)/(x)+x^(log(e)x))^(6) if T(4)=20xx8^(7) then v...

    Text Solution

    |

  20. If one root fo the quadratic equation ix^(2)-2(i+1)x+(2-i)=0,i=sqrt(-1...

    Text Solution

    |