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

The moment Coefficient of kurtosis is

• β₁ A
• β₂ B
• Zero C
• m₂ D

Another name of probability sampling is________ sampling.

• Random A
• Non-random B
• Error C
• Bias D

The standard error of the estimate increased by decreasing

• population A
• sample size B
• errors C
• precision D

ŷ=a+bx, this line will be called least squares line if it makes=Σ(y-a-bx)2

• maximum A
• constant B
• minimum C
• variable D

Keyboard, mouse and scanner are the ---------- devices

• input A
• output B
• logical C
• mini D

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

• = A
• < B
• > C
• ≠ D

(α) = (αB) + ------------------

• (Aβ) A
• (AB) B
• (αβ) C
• (A) D

The probability density function has ------------------ value for every value of x.

• negative A
• positive B
• minimum C
• maximum D

If X - N (50,25), then=σ = ________.

• 3 A
• 5 B
• 25 C
• 50 D

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

• time series contains yearly values A
• trend is linear B
• time series contains odd number of values C
• none of these D

Sample is a sub-set of ________.

• Population A
• Data B
• Set C
• Distribution D

In time series seasonal variations can occur within a period of:

• Nine years A
• Four Years B
• Three years C
• One year D

P(type I error) is equal to:

• 1 - α A
• 1 - β B
• α C
• β D

A quantitative statement about a population is called:

• Research hypothesis A
• Composite hypothesis B
• Simple hypothesis C
• Statistical hypothesis D

Small sample has less than

• 50 values A
• 45 values B
• 30 values C
• 35 values D

• best estimators A
• biased estimators B
• unbiased estimators C
• normal estimators D

For an r x c contingency table, the number of degrees of freedom are equal to:

• rc A
• r + c B
• (r-1)+(c-1) C
• (r-1)(c-1) D