Free Professional Development
Screen recordings of my presentations at conferences.
2026 QAMT Senior Maths Day
November 2026: The video is a pre-recording of my presentation 'Senior Statistics with Desmos' at the 2026 QAMT Senior Maths Day.
| Time | Chapter | Topic | Link |
|---|---|---|---|
| 00:00 | Introduction | Quick overview of the video | |
| 00:32 | General Maths | Univariate data analysis | Desmos Graph |
| 13:35 | General Maths | Bonus material (labels) | |
| 18:14 | Maths Methods | Sampling, proportions and interval estimates | Desmos Graph |
| 36:02 | Maths Methods | Bonus material (automated sampling) | |
| 46:48 | Specialist Maths | Statistical inference | Desmos Graph |
| 64:46 | Specialist Maths | Bonus material (buttons, frequency table) | |
| 78:30 | Thank you | Get in touch hello@linneman.au |
2026 QAMT State Conference
July 2026: The video is a condensed re-recording of my presentation 'Statistics with Desmos' at the 2026 QAMT State Conference.
All the Desmos graphs are available in this Desmos Notebook. The data sources for the graphs are detailed below.
| Time | Chapter | Topic | Link |
|---|---|---|---|
| 00:00 | Introduction | Quick overview of the video | |
| 01:06 | Year 7-8 | Histograms | Desmos Graph |
| 04:54 | Year 9-10 | Boxplots | Desmos Graph |
| 12:14 | Year 9-10 | Scatterplots | Desmos Graph |
Example 1: Negatively skewed vs random test data
I want you to generate score-frequency data and output as two lists formatted for pasting into Desmos. The data is a hypothetical maths test sat by 146 students, scored from 0-10, integer results only. I want the distribution to demonstrate negative skew.
Here's the data with a clear negative skew — most students scored well (7–10), with the tail dragging left toward lower scores.
s = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]f = [1, 1, 2, 4, 6, 9, 14, 24, 35, 31, 19]Example 2: Test cricket match totals for current First XIs
Get me test cricket matches played by the current starting XI for Australia, England, India, and New Zealand, formatted as lists ready to paste into Desmos. Names are not necessary, just match totals for each player, so each list should have eleven elements.
Here are the four lists formatted for Desmos:
A = [58, 5, 55, 112, 60, 37, 27, 8, 7, 100, 21]E = [47, 34, 9, 163, 32, 118, 18, 6, 16, 12, 17]I = [17, 57, 5, 30, 8, 80, 6, 11, 10, 8, 36]N = [103, 43, 105, 27, 22, 21, 19, 5, 2, 47, 11]Example 3: Burglary rate vs TV viewers correlation
Extract year, burglary (format 1886.5 as 1.89, ie divide by 1000 and round to 2dp) and viewers data (format 7200000 as 7.2, ie divide by 1000000 and round to 2dp) from this Tyler Vigen spurious correlation page and format as three lists that I can paste into Desmos.
Here are the three lists ready to paste into Desmos:
Y = [1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021]B = [1.89, 1.97, 1.78, 1.76, 1.43, 1.14, 1.18, 1.11, 1.02, 1.10, 1.10, 0.99, 1.03, 0.93, 0.81, 0.75, 0.77, 0.73, 0.80, 0.84, 0.76, 0.66, 0.61, 0.56, 0.52, 0.52, 0.54, 0.57, 0.53, 0.47, 0.46, 0.41, 0.42, 0.39, 0.36, 0.34, 0.34]V = [7.20, 7.00, 7.10, 6.50, 5.40, 5.20, 5.40, 4.90, 5.60, 5.30, 5.80, 5.80, 5.10, 5.80, 4.20, 3.80, 3.60, 3.10, 3.10, 2.70, 2.60, 2.30, 2.10, 2.20, 2.20, 2.00, 2.00, 2.10, 1.90, 2.05, 1.80, 1.60, 1.60, 1.60, 1.40, 1.20, 1.20]