Home
Class 12
MATHS
A set of n values x(1),x(2),……,x(n) has ...

A set of n values `x_(1),x_(2),……,x_(n)` has standard deviation `sigma`. What is the standard deviation of n values `x_(1)+k, x_(2)+k….,x_(n)+k?`

Promotional Banner

Topper's Solved these Questions

  • INVERSE TRIGONOMETRIC FUNCTIONS

    RESONANCE DPP|Exercise All Questions|15 Videos

  • MATRICES

    RESONANCE DPP|Exercise All Questions|7 Videos

Similar Questions

Explore conceptually related problems

The standard deviation of n observation x_(1),x_(2),……x_(n) is 6. The standard deviation of another set of n observations y_(1),y_(2),………..y_(n) is 8. What is the standard deviation of n observations x_(1)-y_(2),x_(2)-y_(2),………..,x_(n)-y_(n) ?

If the standard deviation of n observation x_(1), x_(2),…….,x_(n) is 5 and for another set of n observation y_(1), y_(2),………., y_(n) is 4, then the standard deviation of n observation x_(1)-y_(1), x_(2)-y_(2),………….,x_(n)-y_(n) is

If, s is the standard deviation of the observations x_(1),x_(2),x_(3),x_(4) and x_(5) then the standard deviation of the observations kx_(1),kx_(2),kx_(3),kx_(4) and kx_(5) is

If the standard deviation of x_(1),x_(2),...x_(n) is "3.5," then the standard deviation of -2x_(1)-3,-2x_(2)-3,......,-2x_(n)-3 is

If the standard deviation of x_1, x_2,……x_n is 3.5, then the standard deviation of -2x_1, -3,-2x_2, -3, ……, -2x_n -3 is

If M is the mean of n observations x_(1)-k, x_(2)-k, x_(3)-k,…., x_(n)-k , where k is any real number, then what is the mean of x_(1), x_(2), x_(3) …., x_(n) ?

If x_(1),x_(2)……..x_(n) be n observation and barx be their arithmetic mean .Then formula of the standard deviation is given by

RESONANCE DPP-JEE MAINS-All Questions
  1. If a = sqrt((7+4sqrt3)/(7-4sqrt3)) then the value of [a(a-14)]^2 is

    Text Solution

    |

  2. Let cos^-1(4 x^3-3 x)=a+b cos^-1 x If x in [-1/2,-1], then a+b pi=

    Text Solution

    |

  3. A set of n values x(1),x(2),……,x(n) has standard deviation sigma. What...

    Text Solution

    |

  4. If roots of x^3+bx^2+cx+d=0 are (A) in A.P. then 2b^3-9bc+27d=0 (B) ...

    Text Solution

    |

  5. Solve the equation 2sin^(-1)x=tan^(-1)((2xsqrt(1-x^2))/(1-2x^2))

    Text Solution

    |

  6. For each positive integer n , let f(n+1)=n(-1)^(n+1)-2f(n) and f(1)=(2...

    Text Solution

    |

  7. If y(x) is the solution of the differential equation (dy)/(dx)=-2x(y-1...

    Text Solution

    |

  8. If alpha and beta are the roots of the quadratic equation x^(2) - 4...

    Text Solution

    |

  9. Let f(x) =x^2+ ax + b cos x, a being an integer and b is a real numbe...

    Text Solution

    |

  10. Solve for x :5^(logx)+5x^(log5)=3(a >0); where base oflog\ is a

    Text Solution

    |

  11. A parabola is drawn whose focus is one of the foci of the ellipse x^2...

    Text Solution

    |

  12. Let C1 and C2 are circles defined by x^2+y^2 -20x+64=0 and x^2+y^2+...

    Text Solution

    |

  13. The number solution of the equation sgn(x^2)=|x-2| is 1 (b) 0 (c) 2...

    Text Solution

    |

  14. If alpha,beta are the roots of the equation, x^2-2x+3=0, find the e...

    Text Solution

    |

  15. The function f(x)={ 1-2x+3x^2-4x^3; x!=-1, 1; x=-1} discuss the co...

    Text Solution

    |

  16. Let f(x) be a differentiable function such that f(x)=x^2 +int0^x e^-t ...

    Text Solution

    |

  17. If (x1, y1)&(x2, y2) are the solutions of the equaltions, (log)(225)(x...

    Text Solution

    |

  18. Investigate for the maxima and minima of the function f(x)=int1^x[2(t...

    Text Solution

    |

  19. The solution of the equation 7^(logx)-5^(logx+1)=3. 5^(logx-1)-13. 7^(...

    Text Solution

    |

  20. int0^1(e^x dx)/(1+e^x)

    Text Solution

    |