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

When b_xy is positive, then b_yx will be _______.

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

The relationship that describes the dependence of the expected value of the dependent random variable for a given value of the independent non-random variable is called

• equation A
• relation B
• ratio C
• regression D

The variable that forms the basis of estimation is called

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

• S_xy A
• S_yx B
• b_xy C
• b_yx D

• y-intercept A
• x-intercept B
• slope C
• none of these D

The estimates of the parameters=α and=β are

• μ and=σ2 A
• a and b B
• μ andπ C
• χ2 and Z D

• 37 A
• 132 B
• 32 C
• cannot be calculated 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

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

• = A
• < B
• > C
• ≠ D

• 
  A
• b_yx B
• b_xy C
• S_p D

The measures of strength of closeness of linear relationship between two variables is called

• simple linear regression A
• composite linear regression B
• simple linear correlation C
• composite linear correlation D

If the value of any regression coefficient is zero, then two variable are _______.

• Qualitative A
• Correlation B
• Dependent C
• Independent D

The regression equation always passes throught_________.

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

The estimated regression line always passes through

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

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

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