One Liners for StatsQuest Fundamentals

I love StatsQuest and have watched quite some videos from it. After a while, I lose track of which one I have watched and as you know usually Josh will ask you to make sure to watch some pre-requisites. Here I am documenting what I have watched and try to summarize each with just one (ok a few) sentence. Today we will start with the fundamentals.

  1. Histograms They are geneticists! They are statisticians with (my) domain knowledge!

  2. The Main Ideas behind Probability Distributions Dag? Not Bam?

  3. The Normal Distribution The normal curves are drawn such that 95% of the measurements fall between +/- 2 sd around the mean.

  4. The mean, th emedian and the mode. If it’s normal they are the same.

  5. The Exponential Distribution Used when estimating time between two events. I never thought about exponential distribution in this sense. For me it is the relationship between time(x) and population size(y). If a population starts at 100 individuals (y0 = 100) and has a growth rate of λ=0.05 (5% per unit of time), the population at time t would be: y(t)=100e^0.05t. But if you think about it, whenever they give examples of exponential distribution, it goes down along the x-axis, instead of up (time-population)!

Huan Fan /
Published under (CC) BY-NC-SA in categories notes  tagged with stats 
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