1. Determine the Interquartile range for the following set of data:
    5, 20, 15, 25, 0, 10, 15, 5, 25, 30, 20
  2. Determine the 5 number summary for the set of data:
    5, 20, 15, 25, 0, 10, 15, 5, 25, 30, 20
  3. Based on the box and whisker plot below, what is the median of the data?
  4. Based on the box and whisker plot alove, what is the IQR of the data?
  5. Based on the box and whisker plot above, what is the range of the data?
  6. What is the 5 number summary of the following data?
    100, 150, 50, 30, 90, 50
  7. What is the interquartile range of the following data?
    100, 150, 50, 30, 90, 50
  8. What percent of the data listed below is higher than the upper quartile?
    88, 53, 72, 67, 48, 63, 25, 34, 46, 55, 72, 77
  9. What percent of the data listed above is higher than the lower quartile?
  10. What percent of the data listed above is higher than the median?
  11. What does it mean to standardize a score?
  12. Tina's score on her midterm exam was at the 50th percentile. The grades were normally distributed. The exam average was 78 and the standard deviation was 6. What was Tina's score on the exam?
  13. I scored in the 98th percentile on an achievement test last year. The test scores were normally distributed with an average of 1200 and a standard deviation of 150. What was my score?
  14. If 3500 people took the acheivement test, how many scored lower than the 98th percentile?
  15. Given IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15, the proportion of people with IQs above 130 is:


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