Algebra-1

Question Analysis
This question evaluates the student's ability to determine the proportion of data points that meet a specific criterion and represent it on a dot plot.

Key Concept Explanation
Proportion is the ratio of the number of data points that meet a specific condition to the total number of data points. It provides a measure of the relative frequency of a particular value or range of values.

Step-by-step Solution
1. Organize the data in ascending order: {72, 75, 75, 78, 80, 80, 82, 85, 85, 88, 90, 92, 95, 95, 95, 98, 100, 100, 100, 100}
2. Count the number of students who scored 85 or higher: 13 students.
3. Determine the total number of students: 20 students.
4. Calculate the proportion:

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