Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions. Saturday's cumulative frequency ogive follows: The percentage of sales transactions on Saturday that were between $100 and $150 was ___.
A) 20%
B) 40%
C) 60%
D) 80%
E) 10%

Question

Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions. Saturday's cumulative frequency ogive follows:  The percentage of sales transactions on Saturday that were between $100 and $150 was ___.
A) 20% 
B) 40% 
C) 60% 
D) 80% 
E) 10%

Quizplus · Accepted Answer

According to the ogive, the total number of sales transactions is 500.
The percentage of sales transactions between $100 and $150 can be calculated by subtracting the cumulative frequency up to $100 from the cumulative frequency up to $150, and then dividing by the total number of transactions.
Cumulative frequency up to $100 = 150
Cumulative frequency up to $150 = 450
Number of transactions between $100 and $150 = 450 - 150 = 300
Percentage of transactions between $100 and $150 = (300/500) x 100% = 60%. 
Therefore, the correct choice is C) 60%.

Each Day, the Office Staff at Oasis Quick Shop Prepares