1 |
Random variable is also called ___________. |
- A. Chance stochasitc
- B. Coverges
- C. Random
- D. None of these
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2 |
E(x - μ) is equal to: |
- A. E(x)
- B. zero
- C. μ
- D. X - μ
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3 |
Which method of construction of consumer price index number is the laspeye's index number. |
- A. Aggregate expenditure method
- B. Family budget method
- C. Both a and b
- D. None of these
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4 |
The process of arranging data into rows and columns is called. |
- A. Freqeuncy distribution
- B. Classification
- C. Tabulation
- D. Array
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5 |
Variance of binomial distribution is |
- A. np
- B. <span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 18px; line-height: 23.390625px;">√</span>npq
- C. npq
- D. nq
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6 |
Continuous data are differentiated from discrete data in that. |
- A. Discrete data classes are represented by fractions
- B. Continuous data classes may be represented by fractions
- C. Continuous data take on only whole numbers
- D. Discrete data can take on any real number
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7 |
For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to. |
- A. 9
- B. 70
- C. 19
- D. None of these
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8 |
A disadvantage of range is that it is based on. |
- A. Absolute deviation
- B. Square deviation
- C. Two extreme observation
- D. Upper and quartile
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9 |
The mode of letters in the word STATISTICS is: |
- A. S
- B. T
- C. I
- D. S & T
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10 |
For a constant K ,the variance of K. |
- A. Zero
- B. A<sup>-2</sup>
- C. K
- D. None of these
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