| 1 |
The variance of constant is always |
- A. Constant
- B. One
- C. Positive
- D. Zero
|
| 2 |
<span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 18px; line-height: 23.390625px;">β<sub>1</sub> is a quantity</span> |
- A. Dimensional
- B. Dimension less
- C. Positive
- D. Negative
|
| 3 |
The positive square root of the mean of the squares of deviations of values from their mean is |
- A. Variance
- B. Covariance
- C. Standard deviation
- D. Standard error
|
| 4 |
The most popular measure of dispersion in industry and meteorology is. |
- A. Range
- B. Quartile deviation
- C. Mean deviation
- D. Standard deviation
|
| 5 |
The sum of squares of deviations is a minimum if these deviations are taken from the. |
- A. Mean
- B. Mode
- C. Median
- D. All of these
|
| 6 |
The compare the variation of two or more than two sereies, we use. |
- A. Mean absolute deviation
- B. Variance
- C. Coefficient of viariation
- D. Corrected atandard deviation
|
| 7 |
The value of quartile deviation is always |
- A. Positive
- B. Zero
- C. Negative
- D. None of these
|
| 8 |
The distribution is symmetrical if the moment coefficient of skewense b1 is. |
- A. Negative
- B. Postive
- C. 3
- D. 0
|
| 9 |
If the third moment about mean is zero ( m3 = 0) , then the distribution is. |
- A. Mesokurtic
- B. Positively skewed
- C. Symmetrical
- D. Negatively skewed
|
| 10 |
M.D. of the values 4,4,4,4 is |
|