How to read the density symbol ρ

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• 1. Add, subtract and multiply between 12345678 octets to make it equal to 1
• 2. How can 123456 be equal to 7 by addition and subtraction
• 3. How can 123456789 be equal to 100 only by addition and subtraction?
• 4. Add a sign before 12345678 to make his result negative 4
• 5. How can 12345678 be equal to 1
• 6. What is 12345678 equal to 10
• 7. Add appropriate operation symbols to make 100 appear 1 2 3 4 5 6 7 8
• 8. 6 = 100 add operation symbol
• 9. Fill in the sign between 12345678 to make the formula equal to 51 I'm in a hurry. I said to Hua
• 10. Add symbols from 1 to 8 to make the sum 100
• 11. How to pronounce the sign of average
• 12. Semiotics ~ all
• 13. Who knows how to write and read the sign of "weighted average"! Is it X or x?
• 14. Who knows how to find P with mean standard deviation n
• 15. What are mean, standard deviation and relative number?
• 16. What is the relationship between mean and standard deviation?
• 17. Who can help me calculate the mean ± SD Group 1: age: 21,22,27,28,16,16,15,16,15,15,16,16,17,17,12,10,16,4,15,19,16,61,4,14,14,9,5,2,9,4,55,14,38,11,3,3,10,32,22,22,33,23,27,21,15,5,38,37,6,22,31,35,52,25,14,20,17,14,14,16,52,5,35,16,32,28,15 The second group: days: 10,9,2,7,9,9,9,10,6,10,5,9,8,7,5,6,4,5,7,10,6,4,4,6,5,12,10,4,10,5,4,3,4,3,7,5,5,6,9,6,5,4,7,13,3,12,5,7,4,5,7,6,8,9,6 The third group: days: 51 cases, the incubation period, the first day 27, the second day 10, the third day 6, the fourth day 7, the fifth day 1, the average incubation period of how many days? Group 4: days, 65 samples, 1 case turned negative on the first day, 7 on the second day, 30 on the third day, 17 on the fourth day, 6 on the fifth day, 4 on the sixth day, how many days turned negative on average
• 18. How to read? What symbols? It's like an eight
• 19. How to read the sign of standard deviation is not Sigma in the quantitative method,
• 20. We have already calculated the standard deviation of mean addition and subtraction. How can we compare it with the national norm in SPSS and calculate t