In Text Questions (Textbook Page No. 212,217) - Chapter 6 - Statistics - 8th Maths Guide Samacheer Kalvi Solutions

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Try These (Text Book page No. 212)
Question $1 .$
Arrange the given data in ascending and descending order: $9,34,4,13,42,10,25$, $7,31,4,40$
Answer:
Ascending order: $4,4,7,9,10,13,25,31,34,40,42$.
Descending order: $42,40,34,31,25,13,10,9,7,4,4$
 

Question $2 .$
Find the_range of the given data: $53,42,61,9,39,63,14,20,06,26,31,4,57$
Answer:
Ascending order of the given data:
$4,6,9,14,20,26,31,39,42,53,57,61,63$
Here largest value $=63$
Smallest value $=4$
$\therefore$ Range $=$ Largest value $-$ smallest value
$=63-4=59$
 

Try These (Text Book page No. 217)
Question $1 .$
Prepare a frequency table for the data:
$3,4,2,4,5,6,1,3,2,1,5,3,6,2,1,3,2,4$
Answer:
Ascending order of the given data.
$1,1,1,2,2,2,2,3,3,3,3,4,4,4,5,5,6,6$
The distribution table:

Question $2 .$
Prepare a grouped frequency table for the data:
$10,9,3,29,17,34,23,20,39,42,5,12,19,47,18,19,27,7,13,40,38$,
$24,34,15,40$
Answer:
Largest value $=47$
Smallest value $=3$
Range $=$ Largest value $-$ Smallest value
$=47-3=44$
Suppose we take class size as 10 , then Number of class intervals possible
$=\frac{\text { Range }}{\text { Class size }}=\frac{44}{10}=4.4$