Probability statistics symbols

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Across
  1. 6. standard deviation of random variable X
  2. 8. gaussian distribution
  3. 9. distribution of random variable X
  4. 11. average arithmetic mean
  5. 12. mean of population values
  6. 13. population of sample variance estimator
  7. 14. expected value of random variables X given Y
  8. 15. double summation
Down
  1. 1. equal probability in range a,b
  2. 2. standard deviation value of random variable X
  3. 3. expected value of random variable ×
  4. 4. probability of event A
  5. 5. middle value of random variable X
  6. 7. variance of population values
  7. 10. variance of random variable X