Question
Redo the bar graph in given Figure using counts instead of percentages. The necessary data are given in Table. Would the comparison of frequency of myopia across the categories of lighting be as easy to make using the bar graph with counts? Generalize your conclusion to provide guidance about what should be done in similar situations.
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Table : Nighttime Lighting in Infancy and Eyesight
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Slept with:
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No Myopia
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Myopia
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High Myopia
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Total
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Darkness
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155(90%)
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15(9%)
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2(1%)
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172 (100%)
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Nightlight
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153(66%)
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72(31%)
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7(3%)
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232(100%)
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Full Light
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34(45%)
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36(48%)
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5(7%)
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75(100%)
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Total
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342(71%)
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123(26%)
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14 (3%)
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479(100%)
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