Business Statistics and Research Methods MCQs

Which of the following approach of probability assumes 'degree of belief'?

A commuter drives 10 miles on first day at a speed of 60 km/hour, the second day at 15 km/hour and third day 10 km/hour. The mean speed of the commuter is

The mode of 2, 4, 2, 3, 1 is

If variance is 144, then the standard deviation will be

When a population is heterogeneous, it is divided into groups, so that there is homogeneity within the group and heterogeneity between the groups, and some items are selected at random from each group. It is a case of:

If all values of a variable are multiplied by a given number, which one of the following will NOT be effected?

If A $$ \subset $$ B and B $$ \subset $$ A, then:

Which of the following is a causes of correlation?

Match the items of List-I and List-II and indicate the correct matching of the items. List-I List-II a. $$\frac{{{z^2} \cdot \sigma _p^2}}{{{e^2}}}$$ 1. Measurement for Kurtosis b. $$\frac{{\left| {\overline {{X_1}} - \overline {{X_2}} } \right|}}{{\sqrt {\sigma _p^2\left( {\frac{1}{{{n_1}}} + \frac{1}{{{n_2}}}} \right)} }}$$ 2. Calculated value of F ratio c. $$\frac{{{\mu _4}}}{{\mu _2^2}}$$ 3. Statistical approach to find out the size of sample d. $$\frac{{\sigma _1^2}}{{\sigma _2^2}}$$ 4. Calculated z value of mean differences