Business Statistics and Research Methods MCQs

Consider the following statistical tests.
1. 'F' test
2. 'T' test
3. 'Z' test
4. 'Chi-square' test
Which of these are parametric tests?

Assertion (A) The two lines of regression can never be parallel.
Reason (R) The two lines of regression always pass through common point (x · y). Therefore, they can never be parallel.

The shape of standard normal variate depends upon
1. mean
2. standard deviation
3. quartile deviation
4. mean deviation
Select the correct answer using the options given below

Match the following items in List-I with most suitable options in List-II:

List-I	List-II
a. Fisher	1. Inverse probability
b. Karl Pearson	2. Normal Distribution
c. Thomas Bayes	3. Correlation Coefficient
d. Karl Gauss	4. Index Numbers

Alternative hypothesis is expressed by:

Choose the correct answer for the following statements being correct or incorrect.
Statement I If the value of $${\beta _2}$$ i.e. $$\frac{{{\mu _4}}}{{{\sigma _4}}},$$  of a distribution gives the value more than 3, its curve is platykurtic.
Statement II In a moderately asymmetrical distribution, the standard deviation is 1.25 times of mean deviation.

Consider the following tests.
1. Z-test
2. T-test
3. F-test
4. Chi-square test
The concept of degree of freedom is associated with

Match the following.

List-I	List-II
a. $${\beta _1}$$	1. $${\beta _2} - 3$$
b. $${\beta _2}$$	2. $$\frac{{\mu _3^2}}{{\mu _2^3}}$$
c. $${\gamma _1}$$	3. $$\frac{{{\mu _4}}}{{\mu _2^2}}$$
d. $${\gamma _2}$$	4. $$\sqrt {{\beta _1}} $$

If the standard deviation of a variable X is s and if y = a + bs, where a and b are constants, the standard deviation of y would be