The frequency table below summarizes student grades on a final exam. Draw a frequency polygon based on the data. Grade (%) Frequency 50 up to 60 3 60 up to 70 11 70 up to 80 18 80 up to 90 11 90 up to 100 7 Total 50 First find the midpoint of each class interval. Grade (%) Midpoint Frequency 40 up to 50 0 50 up to 60 3 60 up to 70 11 70 up to 80 18 80 up to 90 11 90 up to 100 7 100 up to 110 0
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A frequency polygon is a graphical representation of the distribution of a dataset. It is similar to a histogram but uses points connected by straight lines. It can also be used to compare different data sets. Show more…
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7. Construct a frequency distribution and a frequency polygon for the data set below. Describe any patterns. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Exam Scores Number of classes: 5 Data set: Exam scores for all students in a statistics class. 83 92 94 82 73 98 78 85 72 90 89 92 96 89 75 85 63 47 75 82
Adi S.
Consider the frequency distribution of exam scores given below: Class Frequency (a & b) Fill in the following table: Class Frequency Cumulative Frequency Percent Frequency Cumulative % Frequency 50 < 60 60 < 70 70 < 80 80 < 90 90 < 100 Total (c) Choose a percent frequency polygon.
Qudsiya A.
Grade on Statistics Exam Frequency Below 50 10 50 - 59 4 60 - 69 9 70 - 79 11 80 - 89 19 90 - 100 14 Given the frequency table above, construct the following: (a) The relative frequency table that corresponds with the above table. Grade on Statistics Exam Relative Frequency Below 50 50 - 59 60 - 69 70 - 79 80 - 89 90 - 100 (b) The cumulative frequency table that corresponds with the above table. Grade on Statistics Exam Cumulative Frequency Below 50 50 - 59 60 - 69 70 - 79 80 - 89 90 - 100
Supreeta N.
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