For a particular sample of 50 scores on a psychology exam, thefollowing results

Question

For a particular sample of 50 scores on a psychology exam, thefollowing results were obtained. First Quartile = 67 Third quartile = 91 Standard deviation = 9 Range = 48 Mean = 75 Median =80 Mode = 81 Midrange =74 1) What score was earned by more students than any otherscore? Why? 2) What was the highest score earned on the exam? 3) What was the lowest score earned on the exam? 4) According to Chebyshev's Theore, how many studentsscored between 57 and 93? 5) Assume that the distribution is normal. Bsed on theEmpirical Rule, how many students scored between 57 and 93? For a particular sample of 50 scores on a psychology exam, thefollowing results were obtained. First Quartile = 67 Third quartile = 91 Standard deviation = 9 Range = 48 Mean = 75 Median =80 Mode = 81 Midrange =74 1) What score was earned by more students than any otherscore? Why? 2) What was the highest score earned on the exam? 3) What was the lowest score earned on the exam? 4) According to Chebyshev's Theore, how many studentsscored between 57 and 93? 5) Assume that the distribution is normal. Bsed on theEmpirical Rule, how many students scored between 57 and 93?

Explanation / Answer

1) Most of them earned 81, which is having by the students thanany other scores. 2) The highest score is 98. 3) The lowest score is 50. 4) According to chebyscheff''s theorem, at least 75% of the students scored between 57 and 93. 5) Based on empirical rule, approximately 95% of the studentsscored between 57 and 93.

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