PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
1. The amount that the children have spent for purchasing some eatables in one day trip of a school are \(5\), \(10\), \(15\), \(20\), \(25\), \(30\), \(35\), \(40\). Using step deviation method, find the standard deviation of the amount they have spent.
 
Answer:
 
The standard deviation \(=\)
 
2. Find the standard deviation of the following data \(7\), \(4\), \(8\), \(10\), \(11\). Add \(3\) to all the values then find the standard deviation for the new values.
 
Answer:
 
The standard deviation \(=\)
 
3. Find the standard deviation of the data \(2\), \(3\), \(5\), \(7\), \(8\). Multiply each data by \(4\). Find the standard deviation of the new values.
 
Answer:
 
The standard deviation \(=\)
 
(Note: Round off the answers to \(2\) decimal places.)