The following data was obtained from a study of the IQ in college students:
First Quartile: 95
Third Quartile: 115
80th Percentile: 117
About what percent of those surveyed had an IQ of less than 95?
The first quartile is the number such that 25% of the data is less than it. Here the first quartile is 95.
So, 25% of those surveyed had an IQ of less than 95.
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