5. Five mark exercise problems - I

1. Find the coefficient of variation of 24, 26, 33, 37, 29, \(31\).

 

Answer:

 

The coefficient of variation is \(\%\).

 

2. The time taken (in minutest) to complete a homework by \(8\) students in a day are given by \(38\), \(40\), \(47\), \(44\), \(46\), \(43\), \(49\), \(53\). Find the coefficient of variation.

 

Answer:

 

The coefficient of variation is \(\%\).

 

3. The total marks scored by two students Sathya and Vidhya in \(5\) subjects are \(460\) and \(480\) with standard deviation \(4.6\) and \(2.4\) respectively. Who is more consistent in performance?

 

Answer:

 

VidhyaSathya is more consistent.