Interpreting Histogram Scores

Very Hard Data Interpretation Analyzing Graphs

The following histogram represents the distribution of test scores of 400 students who took a mathematics exam. The horizontal axis indicates the score ranges (0-10, 11-20, ..., 91-100), while the vertical axis displays the number of students within each range. The height of each bar represents the total number of students scoring within each range. Based on this histogram, determine which of the following conclusions is correct regarding student performance.

The majority of students scored between 60-80.

The number of students scoring below 50 accounts for less than 25% of the total.

A significant number of students scored above 90.

The average score is skewed towards the lower end of the distribution.

Hint

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