Math, asked by karruu9926, 1 year ago

Find the mean of the data
Class: less than 20;less than 40; less than60;less than 80;less than100
Frequency: 41 ; 51 ; 64 ; 88 ; 97

Answers

Answered by arjunarjun30032003
0

Answer:

answer is 32.47

Step-by-step explanation:

class          frequency     xi         xifi

0-20            41                 10         410

20-40          10                  30       300

40-60           13                 50        650

60-80            24                70         980              

80-100           9                  90          810

total            97                                 3150

   

mean = sigma xifi/sigma fi=3150/97=32.47

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