Home
Class 12
MATHS
State True/False : The correlation co-ef...

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

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

Answer the following questions in short: If the correlation coefficient between x and y is 0.5, find the correlation coefficient between 5x and -4y.

Answer the following questions in short: If the correlation coefficient between x and y is 0.5, find the correlation coefficient between 5x and -4y.

Find out the correct answer out of the options given against each question:If the correlation coefficient between x and y is 0.3, then the correlation coefficient between -x and 2y is-

State True/False : For nornial distribution, the co-efficient of skewness is 3.

Answer the following questions: If the correlation coefficient between x and y be 0.8, determine the correlation coefficient between x and 5 - 3y.

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

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

The ratio of the areas bounded by the curves y= cos x and y=cos 2x between x=0 , x=(pi)/(3) and x-axis is-

The ratio in which the line 3x+4y+2=0 divides the distance between 3x+4y+5=0 and 3x+4y-5=0 is?

State True or False, if 'false' write correct statement. The point (-x,-y) lies in the first quadrant where x lt 0, y lt 0 .

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

    |