Business Statistics and Research Methods MCQ Questions and Solutions with Explanations | Commerce

When both the lower and upper limits of a class are included such classes are called

The lower and upper quartiles of a distribution are 80 and 120 respectively, while median is 100. The shape of the distribution is:

Process of arranging data into a new order is called:

Which of the following is not a primary activity in Michael Porter's value chain?

Which of the following is/are related with the utility of correlation?

Which two of the following statements are true?
(1) Skewness studies the flatness or peakedness of the distribution
(2) A positively skewed distribution curve is stretched more to the right than to the left
(3) On the basis of empirical relationship between mean, mode and median for moderately asymmetrical distribution, Karl Pearson's coefficient of skewness can be measured by 3 (Mean-Median) divided by Standard Deviation
(4) If mean > mode, the distribution is positively skewed
Choose the correct option from those below:

Which one of the following formulae is used to calculate the standard error of coefficient of correlation between 25 paired observations of a sample?

Student's 't' Distribution was discovered by:

A perfect correlation is signified by

With reference to the time series analysis which of the following statement is/are correct?
(1) Time series analysis is not used when the values are constant
(2) Time series analysis is not used when the values are in the form of a function
Select the correct answer using the options given below