Math

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

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  1. www.usatestprep.com/modules/gallery/files/216/21624/21624.JPG
    here is the graph

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  2. 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.

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  3. So the answer is 10?

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  4. No, Its 50

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