Mathematical Statistics

Arithmetic mean may either be classified into ________ ways.             

• 3

• 2

• 5

• 4

In continuous series, the first quartile is the size of ________ th item.

• (N+1)/4

• (N-1)/4

• N/4

• 3N/4

Which measure is dividing the data into two equal parts?

• median

• mean    

• mode  

• variance

The moments about mean are called _________.

• central tendency

• skewness  

• kurtosis

• central moment

Fourth moment about the mean is __________.      

• Mean 

• Variance

• Skewness

• Kurtosis

Which is the degree of peakedness of a distribution?

• Mean

• Kurtosis

• Median  

• Skewness   

What is the order of the total number of observations in a data?

• 0

• 1

• 2^n

• N

Which specifies the number of attributes of a class?

• Order

• Observed Frequency

• Expected Frequency

• Consistency

How many ultimate class frequencies when 2 attributes given?

• 1

• 2

• 3

• 4

Total number of class frequencies when 3 attributes are given ____

• 4

• 9

• 8

• 27