9H Stem and leaf plots
LEARNING INTENTIONS
SUCCESS CRITERIA
I can construct and use a stem-and-leaf plot.
e.g. Organise the data below into an ordered stem-and-leaf plot and find the median and mode. State whether the data is symmetrical or skewed.
0.4 3.2 2.4 1.7 4.4 2.1 4.1 2.7 3.2
I can construct a back to back stem-and-leaf plot.
e.g. The maximum daily temperatures for two world cities over a two-week period are recorded as:
City A: 21, 18, 24, 26, 30, 26, 22, 19, 18, 24, 19, 28, 27, 32,
City B: 12, 12, 9, 15, 10, 13, 20, 21, 21, 17, 22, 18, 17, 9,
Draw a back-to-back stem-and-leaf plot with an interval of 10 and compare and comment on the differences between the maximum temperatures for the two cities.
CHECKLIST
9H
1 a b c d, 2, 3 a , 6, 7
- To know the meaning of the terms mean, median, mode and outlier
- To be able to find the mean, median and mode of a data set
SUCCESS CRITERIA
I can construct and use a stem-and-leaf plot.
e.g. Organise the data below into an ordered stem-and-leaf plot and find the median and mode. State whether the data is symmetrical or skewed.
0.4 3.2 2.4 1.7 4.4 2.1 4.1 2.7 3.2
I can construct a back to back stem-and-leaf plot.
e.g. The maximum daily temperatures for two world cities over a two-week period are recorded as:
City A: 21, 18, 24, 26, 30, 26, 22, 19, 18, 24, 19, 28, 27, 32,
City B: 12, 12, 9, 15, 10, 13, 20, 21, 21, 17, 22, 18, 17, 9,
Draw a back-to-back stem-and-leaf plot with an interval of 10 and compare and comment on the differences between the maximum temperatures for the two cities.
CHECKLIST
9H
1 a b c d, 2, 3 a , 6, 7
ACTIVITY 1:
Complete the worksheet below courtesy of mathsworksheetsforkids.com.
Complete the worksheet below courtesy of mathsworksheetsforkids.com.
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ACTIVITY 2
Worksheet courtesy of mathmammoth.com
Worksheet courtesy of mathmammoth.com
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