Question
A survey asked a group of students to list their eye color. The results of the survey are shown in the graph.
Based on the graph, how many more students in a class of 300 students would be expected to have green eyes than blue eyes?
A) 10
B) 20
C) 50
D) 90
Based on the graph, how many more students in a class of 300 students would be expected to have green eyes than blue eyes?
A) 10
B) 20
C) 50
D) 90
Answers
www.usatestprep.com/modules/gallery/files/216/21624/21624.JPG
here is the graph
here is the graph
The graph shows 30 greens and 20 blues.
Is that % of total?
Assuming %, then 300(0.30-0.20) = ?
That's not one of the choices, so you must somehow relate the data in the graph to the size of the sample.
If it's just the raw data, then 30-20 = 10
But the graph only accounts for 60 people, so that's not many out of 300 asked.
Is that % of total?
Assuming %, then 300(0.30-0.20) = ?
That's not one of the choices, so you must somehow relate the data in the graph to the size of the sample.
If it's just the raw data, then 30-20 = 10
But the graph only accounts for 60 people, so that's not many out of 300 asked.
So the answer is 10?
No, Its 50