SME
Grade 9 Math
One-variable statistics: histograms, box plots, standard deviation and outliers
The main lesson, then each kind of problem it solves.
One-variable statistics: histograms, box plots, standard deviation and outliers
Main lesson
Outliers and the 1.5 × IQR fences
Use this for “The five-number summary is 12, 20, 24, 28, 45. Is 45 an outlier?”
Box plot from a data list
Use this for “Points in nine games: 12, 18, 9, 22, 15, 30, 14, 17, 20. Make a box plot.”
Standard deviation
Use this for “Find the mean and the standard deviation of 1, 3, 3, 5, 5, 7, 7, 9.” From 3 to 8 values.
Compare two box plots
Use this for “Compare the reading minutes of two classes by their medians and IQRs.”
Histogram from a data list
Use this for “Minutes of homework: 35, 42, 18, 50, 27, 44, 38, 60, 30, 47, 25, 40. Make a relative frequency histogram.”
Dot plot from a data list
Use this for “Books read by 10 students: 3, 5, 2, 4, 5, 9, 5, 1, 4, 2. Make a dot plot and find the mode, median and mean.”