Home
Class 12
MATHS
State True/False : If Cov (x, y) = 0, th...

State True/False : If Cov `(x, y) = 0`, then x and y are independent.

Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPERS SET-06

    UNITED BOOK HOUSE|Exercise Exercise|22 Videos

  • QUESTION PAPER 2016

    UNITED BOOK HOUSE|Exercise EXERCISE|43 Videos

Similar Questions

Explore conceptually related problems

Write True or False If x alpha y then x^n alpha y^n .

Write True or False : If x = 3cos theta and y = 3 sin theta then x^2+y^2 = 1 .

Write True or False : If x alpha1/y then y alpha 1/x .

Write True or False If (5x-2y):(2x+3y) = 2:3 then x:y = 12:11

Choose the correct alternative : [MCQ] If x and y are two independent variables then V(x - y) is equal to—

Write down the correct option: If Cov (x, y) = 6 then Cov (x, y + 4) = ...---

If 0 y > 0, then a^x < a^y (write true or false)

State True/False : The correlation co-efficient x and y is 0.5, then between - 2x and -3y is -0.5 .

Write True or False If y alpha 1/x then y/x = non zero constant.

Check whether the following statement is true or false by proving its contrapositive. 'If x,y are integers such that xy is odd, then both x and y are odd integers'.

UNITED BOOK HOUSE-MODEL QUESTION PAPERS SET-07-Exercise
  1. Fill up : If b(xy) =-0.09 and b(yx) = -0.4 then r(xy) = .

    Text Solution

    |

  2. Fill up : The point of intersection of two regression lines give the.

    Text Solution

    |

  3. Fill up : An over all rise or fall in a time series is called the.

    Text Solution

    |

  4. Fill up : In a trend equation y = a + bx, a is the and b represents t...

    Text Solution

    |

  5. Fill up : A polynomial of the form y = a + bx + cx^2 is called a .

    Text Solution

    |

  6. Fill up : In a symmetrical binomial distribution, p = .

    Text Solution

    |

  7. Fill up : In a normal distribution, the value of 3rd order central mom...

    Text Solution

    |

  8. State True/False : The variance of binomial distribution can never exc...

    Text Solution

    |

  9. State True/False : For nornial distribution, the co-efficient of skewn...

    Text Solution

    |

  10. State True/False : The parameter p and n completely determine a binomi...

    Text Solution

    |

  11. State True/False : The correlation co-efficient x and y is 0.5, then b...

    Text Solution

    |

  12. State True/False : The two regression equations coincide when r = +- 1...

    Text Solution

    |

  13. State True/False : If Cov (x, y) = 0, then x and y are independent.

    Text Solution

    |

  14. Short Questions: What will be r(xy) if the two regression lines are co...

    Text Solution

    |

  15. Short Questions: Calculate the means of the variables x and y, given t...

    Text Solution

    |

  16. Short Questions: Short notes: (i) Secular trend (ii) method of moving ...

    Text Solution

    |

  17. Short Questions: The p.m.t. of a r.v.x. is given by f( x) = K.x^2, x= ...

    Text Solution

    |

  18. Short Questions: For a poisson distribution, P[x = K] = P[x=K+1], Find...

    Text Solution

    |

  19. Textual Questions: Explain different components of a time series.

    Text Solution

    |