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The following line graph shows the test scores for 10 students on a unit exam. Which shape most accurately describes these data?
- A The data are skewed to the left.
- B The data are skewed to the right.
- C A bimodal or “U”-shaped curve
- D A normal or “bell”-shaped curve
That's Correct!
It's Wrong!
The correct answer is a normal or "bell"-shaped curve. This is because a normal distribution is characterized by a symmetrical shape, with the majority of the data clustered around the mean and tapering off towards the tails. In a bell-shaped curve, the data is evenly distributed on both sides of the mean, indicating a balanced distribution of test scores among the students.