Answer:
a
Step-by-step explanation:
Answer: B
Explanation:
(75 + 90)/250 = 0.66 = 66% of students are 11 or 12
5/250 = 0.02 = 2% of students are 10
(90 + 70)/250 = 0.64 = 64% of students are 12 or 13
10/250 = 0.04 = 4% of students are 14
A relative frequency histogram is the data display that Helena should use if she wants to know the percentage of the teams that scored higher than her team.
<h3>What is a relative frequency histogram?</h3>
A relative frequency histogram is a frequency histogram that compares each class to the total number of items.
Since she wants a data display, a histogram is required to show the graphs of the scores of the various teams.
However, she needs to combine the histogram with relative frequencies to show the ratio of the frequency of her team's score to the total frequency.
Thus, Helena requires a relative frequency histogram to achieve the data display of percentages of the teams' scores.
Learn more about relative frequencies at brainly.com/question/26177128
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