Suppose two classes take the same exam and produce the Frequency results shown i

Question

Suppose two classes take the same exam and produce the Frequency results shown in the following histograms. Which class had a 5- higher standard deviation on the exam? 0.5 60 70 80 90 Exam Scores (Class 1) 60 70 80 90 Exam Scores (Class 2) Choose the correct answer below. O A. Class 2 had a higher standard deviation on the exam since there are more scores on the low end and more scores on the O B. Class 2 had a higher standard deviation on the exam since the distribution is symmetric. high end of the range. c, O D. class I had a higher standard deviation on the exam since the distribution is more skewed Class 1 had a higher standard deviation on the exam since there are more scores on the low end and more scores on the high end of the range. Click to select your answer

Explanation / Answer

In Graph A we see more data is near to mean score of 75 and less data in its ends so it has smaller standard deviation.

In Graph B we see it has less data near its mean and more data in its ends so it has larger standard deviation.

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Correct option is A
Class 2 had a higher standard deviation on the exam since there are more score on the low end and more scores on the high end of the range.

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