21. Calculate rank correlation coefficient from the following data.
X
59
69
39
49
29
Y
79
69
39
49
39
| X | 59 | 69 | 39 | 49 | 29 |
| Y | 79 | 69 | 39 | 49 | 39 |
22. Consider the following statements.
Statement (I): If the alternative hypothesis is as Ha: μ ≠ μ0; a researcher requires two-tailed test in hypothesis-testing.
Statement (II): The mean of the sampling distribution of mean is not equal to the parametric value of mean.
Statement (I): If the alternative hypothesis is as Ha: μ ≠ μ0; a researcher requires two-tailed test in hypothesis-testing.
Statement (II): The mean of the sampling distribution of mean is not equal to the parametric value of mean.
23. In the regression equation X = a + bY, the X is called:
24. If a study is "reliable", this means that:
25. Match the following.
List-I
List-II
a. Level of significance
1. Sample mean is equal to population mean
b. Standard deviation of sampling distribution
2. Parameters
c. Numerical value that describes the characteristics of the population
3. Type I error
d. Normally distributed population
4. Standard error
| List-I | List-II |
| a. Level of significance | 1. Sample mean is equal to population mean |
| b. Standard deviation of sampling distribution | 2. Parameters |
| c. Numerical value that describes the characteristics of the population | 3. Type I error |
| d. Normally distributed population | 4. Standard error |
26. The mean plus and minus 1.96 standard deviation includes . . . . . . . . percent of the items of normal distribution.
27. For more reliable survey results we should use
28. If an event cannot take place, probability will be
29. The curve of normal distribution is . . . . . . . . the horizontal axis.
30. Which two of the following statements are true?
(1) The sum of the deviations from mean (ignoring algebraic signs) is greater than the sum of the deviations from median (ignoring algebraic signs)
(2) Standard deviation is independent of change of origin and change of scale
(3) In a symmetrical distribution, mean deviation equals 4/5 of standard deviation
(4) In a symmetrical and bell shaped distribution, quartile deviation is 1/3 of standard deviation
Choose the correct answer from the options given below
(1) The sum of the deviations from mean (ignoring algebraic signs) is greater than the sum of the deviations from median (ignoring algebraic signs)
(2) Standard deviation is independent of change of origin and change of scale
(3) In a symmetrical distribution, mean deviation equals 4/5 of standard deviation
(4) In a symmetrical and bell shaped distribution, quartile deviation is 1/3 of standard deviation
Choose the correct answer from the options given below
Read More Section(Business Statistics and Research Methods)
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- Business Statistics and Research Methods - Section 1
- Business Statistics and Research Methods - Section 2
- Business Statistics and Research Methods - Section 3
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- Business Statistics and Research Methods - Section 11
- Business Statistics and Research Methods - Section 12