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Stats Test Review Algebra 2 Name________________ Date_________________ Make a stem and leaf plot of the data and then find the mean, median, mode, and range. 1. 35, 36, 38, 36, 42, 45, 41, 48 Stem 2. Leaf 88, 90, 92, 75, 88, 76, 79, 85 Stem Mean: Mean: Median: Median: Mode: Mode: Range: Range: 3. 4. 76, 102, 87, 85, 91, 92, 91, 97 Stem Leaf Leaf 103, 155, 140, 125, 130, 140, 115 Stem Mean: Mean: Median: Median: Mode: Mode: Range: Range: Leaf Compare box and whisker plots A and B. 5. What is the median of each data set? 6. What is the least value in plot A? 7. What is the greatest value in plot B? 8. What is the lower quartile of each data set? A B 4 0 8 12 16 20 9. What is the upper quartile of each data set? 10. Which plot has the greater interquartile range? 11. Which plot illustrates the larger range of data? 12. What percent of the data in plot A is greater than 8? 13. What percent of the data in plot B is less than 18? For the following sets of data find the 5 number summary, ranges, and fences. Name any outliers and then create a box and whisker plot. 14. 48, 3, 19, 17, 4, 4, 14, 3, 13, 15. 2, 31, 10, 17, 10, 11, 17, 13, 3, 19, 13, 7, 17, 10, 14 5, 41, 5, 17, 11, 17 FIVE NUMBER SUMMARY FIVE NUMBER SUMMARY Smallest Number Smallest Number Lower Quartile Lower Quartile Median Median Upper Quartile Upper Quartile Largest Number Largest Number RANGES RANGES Range Range IQR IQR OUTLIER FENCES OUTLIER FENCES Outlier Number Outlier Number Lower Fence Lower Fence Upper Fence Upper Fence Outliers:__________________ Outliers:__________________ 24 16. The numbers below represent the number of chin-ups done in 20 seconds by students in a gym class. Create a frequency distribution of the data. Then draw a histogram. 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 4, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9 6 Interval Tally Frequency 5 Frequency (scores) 1-2 4 3 2 1 0 Range 17. The numbers below represent students’ scores on a recent test. Create a frequency distribution of the data. Then draw a histogram. 78, 87, 92, 70, 94, 99, 76, 70, 81, 95, 82, 71, 79, 88, 98, 77, 84, 72, 75 6 69-76 Tally 5 Frequency Frequency (scores) Interval 4 3 2 1 0 Range 18. The histogram below shows the cost of sandwiches at a restaurant. a) How many sandwiches cost between $4.00 and $4.49? b) How many more sandwiches cost $5.50$5.99 than $4.50-$4.99?