Can anyone point me in the right direction to where I might find the SOA's rounding rules for the normal distribution table (ASM keeps mentioning these rules)? I've found old posts on AO that talk about 5 decimal points but those are referring to standard normal distribution calculators and I'm pretty sure we don't get a calculator and just refer to the table.
Thanks!
edit: I know that they provide this information:
When using the standard normal distribution table, do not interpolate.
• Use the nearest z-value in the table to find the probability. Example: Suppose that
you are to find Pr(Z < 0.759), where Z denotes a standard normal random
variable. Because the z-value in the table nearest to 0.759 is 0.76, your answer is
Pr(Z < 0.76) = 0.7764.
• Use the nearest probability value in the table to find the z-value. Example:
Suppose that you are to find z such that Pr(Z < z) = 0.7. Because the probability
value in the table nearest to 0.7 is 0.6985, your answer is 0.52.
But what would I do for P(Z<1.645) would I take the value for 1.64 or 1.65?
Thanks!
edit: I know that they provide this information:
When using the standard normal distribution table, do not interpolate.
• Use the nearest z-value in the table to find the probability. Example: Suppose that
you are to find Pr(Z < 0.759), where Z denotes a standard normal random
variable. Because the z-value in the table nearest to 0.759 is 0.76, your answer is
Pr(Z < 0.76) = 0.7764.
• Use the nearest probability value in the table to find the z-value. Example:
Suppose that you are to find z such that Pr(Z < z) = 0.7. Because the probability
value in the table nearest to 0.7 is 0.6985, your answer is 0.52.
But what would I do for P(Z<1.645) would I take the value for 1.64 or 1.65?
Rounding Rules
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