12th Class Statistics MCQ Test With Answer for Statistics Full Book

Given=μ0 = 170, X̅ = 190,σ = 36 and n = 9; which statistic is appropriate?

• t A
• z B
• x2 C
• F D

A business cycle has

• one phase A
• two phases B
• three phases C
• four phases D

The ___________ allow you to type information into the computer.

• Mouse A
• Scanner B
• Printer C
• Keyboard D

The systematic components of time series which follow regular pattern of variations are called:

• Noise A
• Signal B
• Additive model C
• Multiplicative model D

The total area under the curve of chi-square distribution is_______.

• 1 A
• 0.5 B
• 0 to ∞ C
• -∞ to +∞ D

The secular trend is measured by the method of semi-averages when:

• Time series contains yearly value A
• Trend is linear B
• Time series contains odd number of values C
• None of them D

• β₁ A
• β₂ B
• β₃ C
• S_k D

(1-α) is called:

• Critical value A
• Level of significance B
• Level of confidence C
• Interval estimate D

One of the great advantages of sampling is

• waste time A
• save time B
• use time C
• need time D

The precision can be increased by  ---------------- the sample size

• increasing A
• decreasing B
• changing C
• ignoring D

In a straight line equation Y = a + bX; a is the:

• X - intercept A
• Slope B
• Y- intercept C
• None of them 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

Chi-square curve ranges from:

• -∞ to +∞ A
• 0 to ∞ B
• -∞ to 0 C
• 0 to 1 D

The value of coefficient of association lies between

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

If r = -1, then there is

• negative correlation A
• perfect negative correlation B
• no correlation C
• average correlation D

Arithmetic operations are carried out by_______ units:

• CPU A
• RAM B
• ALU C
• ROM D