Test scores
Below is a collection of test scores from a class of 20 students. Make 2 histograms of the data. Choose your own horizontal scales as long as you have more than 4 cells in each histogram.
65 70 68 87 98 91 77 85 70 72 86 86 94 95 67 88 77 99 74 71
Your answer:
65 70 68 87 98 91 77 85 70 72 86 86 94 95 67 88 77 99 74 71
Your answer:
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- The test 2
The test scores for a class are 86, 94, 70, 81, 92, 74, 75, 89, 76, and 97. What is the mean of the data set? - Salami
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Suppose the scores on a test have a normal distribution with X=74 and a standard deviation of s=18. What percentage of students have scores higher than 90? What percentage of students have scores between 70 and 85? Twenty percent of the students do better - Kenji
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