[計量] 不好意思想問一題數學
各位好，想請問這題大家都怎麼想的呢?
In a survey, 130 people were asked how many movies they had seen in the
preceding year. Their responses varied from 0 to 30 movies. The graphs above
show two different summaries of the samesurvey results. How many people
responded that they had seen 11 or 12 movies?
https://i.imgur.com/7KCE6jg.jpg
A.10 B.12 C.15 D.20 E.23
此題答案是給E，請問是為什麼呢?(˙A˙);
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推
09/06 14:25, , 1F
09/06 14:25, 1F
→
09/06 15:34, , 2F
09/06 15:34, 2F
→
09/06 18:15, , 3F
09/06 18:15, 3F
推
09/06 23:01, , 4F
09/06 23:01, 4F
→
09/06 23:58, , 5F
09/06 23:58, 5F
→
09/06 23:59, , 6F
09/06 23:59, 6F
→
09/07 07:58, , 7F
09/07 07:58, 7F
→
09/07 12:31, , 8F
09/07 12:31, 8F
→
09/07 12:32, , 9F
09/07 12:32, 9F
推
09/07 12:44, , 10F
09/07 12:44, 10F
→
09/07 13:33, , 11F
09/07 13:33, 11F
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