IQ Scores: use the following data, which show the result of 50 sixth-grade I.Q.

Question

IQ Scores: use the following data, which show the result of 50 sixth-grade I.Q. scores.

80 89 92 95 97 100 102 106 110 120
81 89 93 95 98 100 103 108 113 120
87, 90, 94,97, 99,100, 103,108, 114, 122
88,91, 94 ,97,100, 100, 103, 108, 114, 128
89, 92, 94, 97, 100, 101, 104, 109, 119, 135

Question is : Use this data to construct a frequency distribution with a first class of 80-92.

*this is my last week in this class and i have struggle to figure out what the teacher was teaching so Cramster is my last hope plz help*

Explanation / Answer

You can order the data from lowest to highest. Class Data Frequency 80-92 80, 81, 87, 88, 89, 89, 89, 11 90, 91, 92, 92, 93-105 93, 94, 94, 94, 95, 95, 97, 97, 97, 97, 24 98, 99, 100, 100, 100, 100, 100, 100, 101, 102, 103, 103, 103, 104 106-118 106, 108, 108, 108, 109, 110, 113, 114, 114 9 119-131 119, 120, 120, 122, 128 5 132-144 135 1 If you want to convert into fraction, you divide each frequency by total (50). If you want to graph it, you graph by the class (x-axis) and frequency (y-axis). Hope this helps!

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