Sec. 2.4 



FREQUENCY DISTRIBUTIONS 



27 



250 - 



200 - 



& 150 - 



£ 100 - 



50 - 



425 



1.00 

 .90 g. 

 .80 I 



.70 *= 

 <o 



.60 £ 

 .50 | 

 •40 | 

 .30 '§ 



CD 



.20 * 

 .10 



525 625 725 825 925 1025 

 Weight 



18, 20, 8, 13, 17, 27, 23, 23, 10, 25, 13, 10, 12, 10, 6, 6, 14, 24, 61, 25, 26, 21, 12, 

 15, 18, 19, 26, 21, 11, 0, 0, 8, 34, 66, 32, 7, 8, 23, 20, 24, 62, 8, 15, 19, 33, 20, 51, 

 11, 20, 13, 27, 15, 10, 16, 16, 5, 4, 24, 30, 37, 26, 17, 14, 15, 6, 3, 22, 53, 54, 74, 

 1, 10, 12, 22, 49, 52, 31, 7, 20, 23, 28, 56, 2, 6, 6, 30, 30, 38, 1, 2, 4, 21, 51, 14, 5, 

 17, 21, 28, 9, and 7. 



7. Construct the relative cumulative frequency distribution for the data of 

 the preceding problem, and read from it the value of the median. Check that 

 result with the value obtained from an ordered array of those data. 



8. Use the graph of the relative cumulative frequency distribution for the 

 counts in problem 6 to determine what percentage is less than or equal to ten 

 flies per cow. Ans. 29 per cent. 



