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Conditional probabilities P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON Conor De w e y Data Scientist , Sq u arespace Co u rse o v er v ie w 1. Probabilit y and sampling distrib u tions 2. E x plorator y data anal y sis 3.

  1. Conditional probabilities P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON Conor De w e y Data Scientist , Sq u arespace

  2. Co u rse o v er v ie w 1. Probabilit y and sampling distrib u tions 2. E x plorator y data anal y sis 3. Statistical e x periments 4. Regression and classi � cation PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  3. Q u ick re v ie w 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  4. Ba y es ' theorem 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  5. Probabilit y tree diagrams 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  6. E x ample : passing the inter v ie w PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  7. E x ample : passing the inter v ie w both = 0.25 * 0.40 print(both) coding = (0.25 * 0.40) + (0.75 * 0.20) print(coding) 0.1 0.25 stats_given_coding = both / coding print(stats_given_coding) 0.4 PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  8. S u mmar y Conditional probabilities Ba y es ' theorem Probabilit y tree diagrams PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  9. Let ' s prepare for the inter v ie w! P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON

  10. Central limit theorem P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON Conor De w e y Data Scientist , Sq u arespace

  11. What does it mean ? 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  12. Wh y does it matter ? 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  13. La w of large n u mbers 1 StackE x change PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  14. Sim u lating CLT in P y thon np.random.randint(start, end, size) 1 Ho w to Vis u ali z e the Central Limit Theorem in P y thon PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  15. List comprehension x = [1,2,3,4] out = [] for item in x: out.append(item**2) print(out) [1, 4, 9, 16] x = [1,2,3,4] out = [item**2 for item in x] print(out) [1, 4, 9, 16] PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  16. S u mmar y Central limit theorem La w of large n u mbers Sim u lating die rolls List comprehension PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  17. Let ' s prepare for the inter v ie w! P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON

  18. Probabilit y distrib u tions P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON Conor De w e y Data Scientist , Sq u arespace

  19. What ' s a probabilit y distrib u tion ? Indicates likelihood of an o u tcome Probabilities m u st add u p to 1 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  20. O v er v ie w of common distrib u tions 1 Common Probabilit y Distrib u tions : The Data Scientists Crib Sheet PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  21. O v er v ie w of common distrib u tions 1 Common Probabilit y Distrib u tions : The Data Scientists Crib Sheet PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  22. Berno u lli distrib u tion plt.hist(bernoulli.rvs(p=0.5, size=1000)) PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  23. Binomial distrib u tion plt.hist(binom.rvs(2, 0.5, size=10000)) PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  24. Normal distrib u tion 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  25. Poisson distrib u tion 1 Wikimedia PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  26. Poisson distrib u tion 1 120 Data Science Inter v ie w Q u estions PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  27. S u mmar y De � nition of probabilit y distrib u tions O v er v ie w of common distrib u tions Berno u lli , binomial , normal , and Poisson PRACTICING STATISTICS INTERVIEW QUESTIONS IN PYTHON

  28. Let ' s prepare for the inter v ie w! P R AC TIC IN G STATISTIC S IN TE R VIE W QU E STION S IN P YTH ON

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