Algebra I: Worksheet 9-6
Algebra I: Worksheet Quartiles
For each set of data, find the median, lower quartile (Q1), upper quartile (Q3), inner quartile range and five number summary.
1) 5, 7, 8, 12, 17, 19, 21, 28, 29, 30, 34, 36, 38, 40, 42
median: ______________
lower quartile: _________
upper quartile: _________
Inner Quartile Range:___________
Five Number summary: _________________________________
2) 100, 103, 104, 104, 106, 108, 112, 114, 117, 119, 120, 128, 129, 130, 132, 133,
133, 134, 135, 137, 138, 139, 140, 143
median: ______________
lower quartile: _________
upper quartile: _________
Inner Quartile Range:___________
Five Number summary: _________________________________
3) 80, 81, 81, 85, 85, 86, 88, 90, 91, 95, 96, 99
median: ______________
lower quartile: _________
upper quartile: _________
Inner Quartile Range:___________
Five Number summary: _________________________________
4) 6, 8, 9, 12, 15, 20, 21, 22, 23, 25, 29, 35, 36, 39, 46, 49, 52, 55, 59, 65
median: ______________
lower quartile: _________
upper quartile: _________
Inner Quartile Range:___________
Five Number summary: _________________________________
5) The accompanying frequency table shows the scores on a math test.
|Interval |Frequency |
|91-100 |2 |
|81-90 |8 |
|71-80 |12 |
|61-70 |0 |
|51-60 |7 |
|41-50 |3 |
Based on the frequency table, find the interval that contains the:
Lower quartile: _____________
median: __________________
Upper Quartile: ____________
Inner Quartile Range:___________
Five Number summary: _________________________________
6) The accompanying frequency table shows the ages of 40 people to enter a theater.
|Interval |Frequency |
|0-9 |8 |
|10-19 |7 |
|20-29 |4 |
|30-39 |11 |
|40-49 |5 |
|50-59 |3 |
|60-69 |2 |
Based on the frequency table, find the interval that contains the:
Lower quartile: _____________
median: __________________
Upper Quartile: ____________
Inner Quartile Range:___________
Five Number summary: _________________________________
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