2nd Year Statistics Chapter 14 Online MCQ Test for 12th Class Statistics Chapter 14 (Simple Linear Regression and Correlation)

A data points falling along a straight line is called______.

• Linear relationship A
• Non-linear relationship B
• Linear positive C
• Scatter diagram D

The regression equation always passes throught_________.

• (X, Y) A
• (X, y̅) B
• (X̅, Y) C
• (X̅, y̅) D

Regression line x on y is

• 
  A
• 
  B
• 
  C
• 
  D

r is the ------------ of two regression co-efficient b_yx and b_xy

• arithmetic mean A
• geometric mean B
• harmonic mean C
• median D

The variable, whose resulting value depends upon the selected value of the independent variable is called______.

• Regression A
• Regressor B
• Regressand C
• Coefficient D

The estimated regression line always passes through

• origin A
• 
  B
• x-axis C
• y-axis D

A set of points in a rectangular coordinate system, where each point represents an observed pair of values is called

• least square regression A
• scatter diagram B
• pie graph C
• regression coefficient D

In simple linear regression, the number of unknown constants are:

• Two A
• Three B
• Four C
• Five D

r_xy -------------- r_yx

• = A
• < B
• > C
• ≠ D

The variable that forms the basis of estimation is called

• regression A
• regressand B
• regressor C
• correlation D

If b_yx = 0.89 and b_xy = 0.75, then r=

• 0.89 A
• 0.28 B
• 0.98 C
• 0.82 D

When b_xy is positive, then b_yx will be _______.

• Negative A
• Positive B
• Zero C
• One D

If constants are added to or subtracted from the values of the variables, the value of r 

• is negative A
• is positive B
• is zero C
• remains unchanged D

• S_xy A
• S_yx B
• b_xy C
• b_yx D

The _______ regression line always passes through (X̅, y̅).

• Opposite A
• Estimated B
• Estimates C
• Random D

• 
  A
• b_yx B
• b_xy C
• S_p D

The value of the coefficient of correlation relies between__________.

• -1 and +1 A
• 0 and 1 B
• -1 and 0 C
• -0.5 and + 0.5 D