Question 332224
- What score was earned by more students than any other score? Why? 
Mode= most frequently occurring score, 83
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- What was the highest score earned on the exam? 
highest score= midrange + range/2 = 73+49/2=97.5
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- What was the lowest score earned on the exam?
Lowest score = midrange - range/2 = 73-49/2=48.5
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- According to Chebyshev's Theorem, how many students scored between 56 and 92?
largest-average=92-74=18
this represent k=18/9=2 standard deviations from the mean
thus CT states that "at least"  1-1/k^2 =1-1/4=75% of the scores will surround the average within 2 standard deviations.
75% of 50 = 37.5 or 38 scores
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- Assume that the distribution is normal. Based on the Empirical Rule, how many students scored between 56 and 92? 
if the data is normally distributed, approx 95% of the scores will surround the mean within 2 standard deviations
so.. 95% of 50 =47.5 or approx 48