All the properties of order, interval and zero origin are simultaneously possessed by :
A. | Nominal Data |
B. | Interval Data |
C. | Ratio Data |
D. | Ordinal Data |
Option: C Explanation : |
Under which of the following situations, chi - square test is applicable ?
(a) testing homogenity
(b) testing goodness of fit
(c) testing equality of two sample means
(d) testing equality of two sample proportions
(e) testing independence of attributes
Codes :
A. | Only (a), (b) and (c) |
B. | Only (a), (b) and (e) |
C. | Only (c), (d) and (e) |
D. | Only (a), (c) and (e) |
Option: B Explanation : |
Which one of the following is not the correct statement regarding sampling distribution of mean ?
A. | Sampling distribution of mean is normally distributed for large sized samples. |
B. | Sampling distribution of mean is normally distributed for small sized samples drawn from not normally distributed population. |
C. | 't' distribution is not normally distributed. |
D. | Mean of the sampling distribution of mean is equal to the parametric value of mean. |
Option: B Explanation : |
Consider the following statements and identify the wrong statements :
Statement – I |
: |
Accepting null hypothesis, when it is false, is called a level of significance. |
Statement – II |
: |
1 — α is called power of a test. |
Statement – III |
: |
Critical value of Z - static for two - tailed test at 5% level of significance is 1.96 |
Codes : |
A. | Statements I, II and III |
B. | Statements I and III |
C. | Statements II and III |
D. | Statements I and II |
Option: D Explanation : |