Amy has the greater median test score.
Ed has the greater interquartile range of test scores.
Ed has the greatest range of test scores.
Amy has the lowest test score.
Amy has the higher quartile 1 score.
1.) Amy has the greater median test score. The median is the middle score when the scores are ordered from least to greatest. Amy's median score is 78, while Ed's median score is 76.
2.) Ed has the greater interquartile range of test scores. The interquartile range is the difference between the upper and lower quartiles. The upper quartile is the middle score in the top half of the data set, and the lower quartile is the middle score in the bottom half of the data set. Amy's interquartile range is 10 (86 - 76), while Ed's interquartile range is 16 (92 - 76).
3.) Ed has the greatest range of test scores. The range is the difference between the highest and lowest scores. Ed's highest score is 92, and his lowest score is 76, for a range of 16. Amy's highest score is 88, and her lowest score is 68, for a range of 20.
4.) Amy has the lowest test score. Her lowest score is 68.
5.) Amy has the higher quartile 1 score. The quartile 1 score is the middle score in the bottom quarter of the data set. Amy's quartile 1 score is 74, while Ed's quartile 1 score is 72.