February 26, 2020
Childs are always asking Why?
Until when?
What is the ultimate answer?
I don’t want to destroy the Earth
So, let’s instead say …
24
24°
Angle? Latitude? Temperature?
There is a big difference. For example 24°F=-4.44°C=268.706K
24°C
Shall we get more data?
24.01, 24.66, 22.93, 19.92, 15.72, 12.4, 9.918, 8.99, 9.288, 11.96, 16.01, 20.86, 23.95, 24.65, 22.87, 19.81, 15.89, 12.12, 9.86, 8.755, 8.845, 11.34, 15.47, 20.5, 23.99, 24.85, 23.04, 20.23, 16.3, 12.44, 9.89, 8.703, 9.105, 11.36, 15.83, 20.59, 23.81, 24.56, 23.07, 19.9, 15.86, 12.14, 9.805, 8.89, 9.193, 11.75, 15.95, 20.62, 23.95, 24.81, 22.96, 19.51, 15.81, 12.31, 9.678, 8.665, 9.178, 11.48, 15.62, 20.51, 24, 24.81, 23.03, 19.68, 15.99, 12.3, 10.11, 9.01, 9.348, 11.76, 15.91, 20.54, 24.25, 24.7, 23.37, 19.83, 15.27, 11.79, 9.6, 8.693, 9.04, 11.64, 15.93, 20.81, 23.97, 24.52, 22.79, 19.84, 15.96, 12.38, 9.97, 8.818, 9.355, 11.62, 16.09, 20.68, 23.79, 24.57, 23.13, 19.73 and 15.61
hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm, mild, cold, cold, cold, cold, cold, mild, warm, hot, hot, hot, warm and mild
Lower precision gives more meaning
We can distinguish several levels on this story
Our instruments produce Data. A lot, cheaper every day
Information is the abstraction of data that allows us to make decision
Knowledge allows us to explain why things are as we see
Wisdom allows us to predict the future
Let us look inside these categories
Psychologist Stanley Smith Stevens proposed a taxonomy of Levels of Measurement
Stevens, S.S. (1946). On the Theory of Scales of Measurement. Science, 103 2684, 677-80.
Incremental progress | Measure property | Mathematical operators | Advanced operations | Central tendency |
---|---|---|---|---|
Nominal | Classification, membership | =, ≠ | Grouping | Mode |
Ordinal | Comparison, level | >, < | Sorting | Median |
Interval | Difference, affinity | +, − | Yardstick | Mean, Deviation |
Ratio | Magnitude, amount | ×, / | Ratio | Geometric mean, Coefficient of variation |
Wikipedia: Levels of Measurement
These categories are used for teaching and education research
How can we explain the temperature changes?
In a broad sense an explanation is a story
At some level any story is valid
Human mind apparently is a storyteller
To be meaningful you have to tell a story
… if at the end of the day you can tell yourself a story that makes you feel good, connected, transcendent
Life is short. Live it with purpose