What are the Statistics and Probability Symbols?

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Across
  1. 1. Mo
  2. 6. std(X)
  3. 7. sum of all values in range of all values
  4. 8. MR
  5. 9. arithmetic mean
  6. 12. corr(X, Y)
  7. 14. mean of population value
Down
  1. 2. E(X)
  2. 3. P(A)
  3. 4. sample mean
  4. 5. variance of a random variable
  5. 7. Md
  6. 10. 25% of population is below this value
  7. 11. middle value of random variable x
  8. 13. cov(X, Y)