question_answer

Find the value of \[3{{f}_{1}}-{{f}_{2}}\] if mean for the following frequency distribution is 1.46.
Variable	0	1	2	3	4	5	Total
Frequency	46	76	38	f1	10	f2	200

A) 60                                                                    

B) 70         

C) 80                                                                    

D) 65

E) None of these