Can someone help me/check over with this statistics word question

Question

Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly traded for at least a year, have a stock price of at least $5 per share, and have reported annual revenue between $5 million and $1 billion. The table below show the ages of the chief executive officers for the first 60 ranked films.

 

 

  AGE           FREQUENCY           RELATIVE FREQUENCY         CUMULATIVE RELATIVE FREQUENCY

 

40-44                3                            

 

45-49               11

 

50-54               13

 

55-59               16

 

60-64               10

 

65-69               6

 

70-74               1

 

 

A.) What is the frequency for CEO ages between 54 and 65?

 

39

 

B.) What percentage of CEO's are 65 years or older?

 

0.1

 

C.) What is the relative frequency of ages under 50?

 

0.23

 

D.) What is the cumulative relative frequency for CEO's younger than 55?

 

0.72

 

 

I am not sure if I did the correctly I tired to fill in the blanks from the information I was given and if I did this right then the relative frequency would be blank/60 ie 3/60=0.05 and for the ones like 13/60 = 0.216 i just rounded to 0.22. I am not sure if i am supposed to but I thought that would be my best bet. Did I do this correctly?

 

Answer 1

A.) What is the frequency for CEO ages between 54 and 65?

39  I get 26 ALTHOUGH THIS IS FOR AGES BETWEEN 55 & 65

B.) What percentage of CEO's are 65 years or older?

0.1  I GET 7/60 = 11.7%

C.) What is the relative frequency of ages under 50?

0.23   OK; 14/60

D.) What is the cumulative relative frequency for CEO's younger than 55?

0.72   I GET 27/60 = 0.45