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Create and Interpret Stem & Leaf Plots>
Create and Interpret Stem & Leaf Plots 3Create and Interpret Stem & Leaf Plots 3
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Question 1 of 8
1. Question
The data collected shows the pulse rate of 20 people in a gymnasium. Arrange the data in a stem and leaf plot.66 86 54 68 67 72 79 65 60 55 63 67 53 72 67 61 41 82 59 92 Enter the value for each respective column in the table below-
Stem Leaf (4) (1) (5) (3) (4) (5) (9) (6) (0) (1) (3) (5) (6) (7) (7) (7) (8) (7) (2) (2) (9) (8) (2) (6) (9) (2)
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Need TextPlayCurrent Time 0:00/Duration Time 0:00Remaining Time -0:00Stream TypeLIVELoaded: 0%Progress: 0%0:00Fullscreen00:00MutePlayback Rate1x- 2x
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A stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, identify all the possible first digits of the scores and list them in the Stem column.Stem Leaf 4 5 6 7 8 9 Next, read across the data while listing them to their corresponding stem.List the scores’ last digit to the Leaf column.66 86 54 68 67 72 79 65 60 55 63 67 53 72 67 61 41 82 59 92 Stem Leaf 4 5 4 6 6 7 8 6 9 Continue doing this until all scores are listed.Stem Leaf 4 1 5 4 5 3 9 6 6 8 7 5 0 3 7 7 1 7 2 9 2 8 6 2 9 2 Finally, arrange the values on the Leaf column in ascending order.Stem Leaf 4 1 5 3 4 5 9 6 0 1 3 5 6 7 7 7 8 7 2 2 9 8 2 6 9 2 Stem Leaf 4 1 5 3 4 5 9 6 0 1 3 5 6 7 7 7 8 7 2 2 9 8 2 6 9 2 -
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Question 2 of 8
2. Question
This stem & leaf plot shows the marks of 23 students in a science quiz. Find the mean.Round your answer to the nearest whole numberStem Leaf 4 5 1 0 5 3 2 6 8 4 6 8 3 4 3 3 7 9 1 6 5 8 8 7 2 8 9 5 1 - Mean = (67)
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- 1x
- 0.75x
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- English
Chapters- Chapters
Mean Formula
Mean=∑xNA stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, solve for the sum of the given values.∑x = 45+41+40+53+52+56+58+54 +68+63+64+63+63+79+71 +76+75+78+87+82+88+95+91 = 1542 Next, divide the sum of all values (∑x) by the number of values (N).Mean = ∑xN Finding the mean = 154223 There are 23 given values = 67 Rounded to a whole number Mean=67 -
Question 3 of 8
3. Question
This stem & leaf plot shows the marks of 27 students in a science quiz. Find the range.
Stem Leaf 2 1 3 1 2 2 4 4 5 6 6 7 4 5 5 2 3 4 5 6 6 6 7 6 9 7 3 8 2 5 8 9 2 2 5 - Range = (73)
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Range Formula
Highest Score−Lowest ScoreRemember
A stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, arrange the values on the Leaf column in ascending order.Stem Leaf 2 1 3 1 2 2 4 4 5 6 6 7 4 5 5 2 3 4 5 6 6 6 7 6 9 7 3 8 2 5 8 9 2 2 5 Next, find the highest and the lowest score. This will be the numbers at the bottom and columns.Stem Leaf 2 2 3 1 2 2 4 4 5 6 6 7 4 5 5 2 3 4 5 6 6 6 7 6 9 7 3 8 2 5 8 9 2 2 5 Highest Score = 95 Lowest Score = 22 Finally, subtract the lowest score from the highest score to get the rangeRange = Highest Score−Lowest Score Finding the range = 95−22 Substitute values = 73 Evaluate Range=73 -
Question 4 of 8
4. Question
This stem & leaf plot shows the marks of 29 students in a science quiz. Find the mean.
Round your answer to two decimal placesStem Leaf 1 2 3 6 8 2 1 3 5 7 9 9 9 3 1 2 4 5 6 7 4 5 5 8 9 5 2 5 6 1 2 6 7 7 8 8 4 - Mean = (40.31)
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Mean Formula
Mean=∑xNA stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, solve for the sum of the given values.∑x = 12+13+16+18+21+23+25+ 27+29+29+29+31+32+34+ 35+36+37+45+45+48+49+52+55 +61+62+66+77+78+84 = 1,169 Next, divide the sum of all values ∑x by the number of values (N).Mean = ∑xN Finding the mean = 116929 There are 29 given values = 40.31 Rounded to two decimal places Mean=40.31 -
Question 5 of 8
5. Question
This stem & leaf plot shows the marks of 29 students in a science quiz. Find the median.
Stem Leaf 1 2 3 6 8 2 1 3 5 7 9 9 9 3 1 2 4 5 6 7 4 5 5 8 9 5 2 5 6 1 2 6 7 7 8 8 4 - Median = (35)
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The median is the middle score in a data set.A stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, arrange the values on the Leaf column in ascending order.Stem Leaf 1 2 3 6 8 2 1 3 5 7 9 9 9 3 1 2 4 5 6 7 4 5 5 8 9 5 2 5 6 1 2 6 7 7 8 8 4 Since the total number of scores is 29, the middle score should be the 15th score.292=14.5 and always round up which equals the 15th scoreSimply count the numbers under the Leaf column until you reach the 15th score.Stem Leaf 1 2 3 6 8 2 1 3 5 7 9 9 9 3 1 2 4 5 6 7 4 5 5 8 9 5 2 5 6 1 2 6 7 7 8 8 4 The 15th number is along Stem 3, specifically Leaf 5.Hence, the median is 35, which is the two numbers combined.Median=35 -
Question 6 of 8
6. Question
Find the interquartile range of the stem and leaf plot below.Stem Leaf 1 6 2 3 4 6 3 1 4 1 3 4 4 5 9 5 3 8 8 8 9 6 4 - IQR = (29.5)
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Interquartile Range
IQR =QUpper−QLowerA stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, since the total number of scores is 17, the middle score should be the 9th score.172=8.5 and always round up which equals the 9th scoreSimply count the numbers under the Leaf column until you reach the 9th score.Stem Leaf 1 6 2 3 4 6 3 1 4 1 3 4 4 5 9 5 3 8 8 8 9 6 4 The 9th value is along Stem 4, specifically Leaf 4.Hence, the median is 44, which is the two numbers combined.The median divides the data set into two quartiles, each with 8 values.Find the median of both quartiles to get the lower and upper quartilesLower Half Stem Leaf 1 6 2 3 4 6 3 1 4 1 3 4 5 6 Greater Half Stem Leaf 1 2 3 4 5 9 5 3 8 8 8 9 6 4 Lower Quartile = 26+312 = 28.5 Upper Quartile = 58+582 = 58 Finally, use the formula to get the interquartile range.IQR = QUpper−QLower Interquartile Range formula = 58−28.5 Substitute values = 29.5 Evaluate IQR=29.5 -
Question 7 of 8
7. Question
Find the interquartile range of the stem and leaf plot below.
Stem Leaf 1 1 2 3 3 6 2 1 2 4 3 1 2 4 5 9 4 1 5 5 6 6 5 8 6 1 2 4 7 1 2 5 9 8 2 - IQR = (40)
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Interquartile Range
IQR =QUpper−QLowerA stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, since the total number of scores is 27, the middle score should be the 14th score.272=13.5 and always round up which equals the 14th scoreSimply count the numbers under the Leaf column until you reach the 14th score.Stem Leaf 1 1 2 3 3 6 2 1 2 4 3 1 2 4 5 9 4 1 5 5 6 6 5 8 6 1 2 4 7 1 2 5 9 8 2 The 14th number is along Stem 4, specifically Leaf 1.Hence, the median is 41, which is the two numbers combined.The median divides the data set into two quartiles, each with 13 values.Find the median of both quartiles to get the lower and upper quartilesLower Half Stem Leaf 1 1 1 2 2 8 2 1 2 7 3 1 2 4 5 9 Greater Half Stem Leaf 4 5 5 6 6 5 8 6 1 2 4 7 1 2 5 9 8 2 Finally, use the formula to get the interquartile range.IQR = QUpper−QLower Interquartile Range formula = 62−22 Substitute values = 40 Evaluate IQR=40 -
Question 8 of 8
8. Question
Find the interquartile range of the stem and leaf plot below.
Stem Leaf 3 9 4 9 5 1 2 3 4 4 6 7 9 6 1 1 5 6 7 1 4 6 6 8 2 5 8 9 2 2 2 3 4 5 - IQR = (34)
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Interquartile Range
IQR =QUpper−QLowerA stem and leaf plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit).First, since the total number of scores is 27, the middle score should be the 14th score.272=13.5 and always round up which equals the 14th scoreSimply count the numbers under the Leaf column until you reach the 14th score.Stem Leaf 3 9 4 9 5 1 2 3 4 4 6 7 9 6 1 1 5 6 7 1 4 6 6 8 2 5 8 9 2 2 2 3 4 5 The 14th number is along Stem 6, specifically Leaf 6.Hence, the median is 66, which is the two numbers combined.The median divides the data set into two quartiles, each with 13 values.Find the median of both quartiles to get the lower and upper quartilesLower Half Stem Leaf 3 9 4 9 5 1 2 3 4 4 6 7 9 6 1 1 5 Greater Half Stem Leaf 7 1 4 6 6 8 2 5 8 9 2 2 2 3 4 5 Finally, use the formula to get the interquartile range.IQR = QUpper−QLower Interquartile Range formula = 88−54 Substitute values = 34 Evaluate IQR=34
Quizzes
- Find Mean, Mode, Median and Range 1
- Find Mean, Mode, Median and Range 2
- Find Mean, Mode, Median and Range 3
- Create Frequency Tables & Graphs
- Interpret Frequency Tables 1
- Interpret Frequency Tables 2
- Create and Interpret Bar & Line Graphs (Histograms)
- Interpret Cumulative Frequency Tables and Charts 1
- Interpret Cumulative Frequency Tables and Charts 2
- Create Grouped Frequency Tables and Graphs
- Interpret Grouped Frequency Tables
- Create and Interpret Dot Plots (Line Plots) 1
- Create and Interpret Dot Plots (Line Plots) 2
- Finding the Interquartile Range 1
- Finding the Interquartile Range 2
- Create and Interpret Box & Whisker Plots 1
- Create and Interpret Box & Whisker Plots 2
- Create and Interpret Box & Whisker Plots 3
- Create and Interpret Box & Whisker Plots 4
- Create and Interpret Stem & Leaf Plots 1
- Create and Interpret Stem & Leaf Plots 2
- Create and Interpret Stem & Leaf Plots 3
- Create and Interpret Stem & Leaf Plots 4