N= option
FILE statement 1160, 1166
INFILE statement 1226
natural base constants 461
NBYTE= option
INFILE statement 1168, 1227
negative binomial distributions 426
cumulative distribution functions 426
probabilities from 735
negative numeric values
writing in parentheses 174
nested catalog concatenation 1121
net present value 661, 688
as fraction 661
as percentage 688
NEW option
FILENAME statement, FTP access method 1193
NOBS= option
MODIFY statement 1309
SET statement 1398, 1403
NODUP option, SORT procedure 1600
NOINPUT argument, DISPLAY statement 1140
noncentrality parameters 439
chi-squared distribution 439
F distribution 547
student s t distribution 857
normal distributions 373, 427
cumulative distribution functions 427
deviance from 495
probability density functions 703
random numbers 373, 665, 780
NOTSORTED argument, ABORT statement 1113
NUMBER system option 1570
numeric arguments
returning value of 441
numeric data 598
best notation 113
comma format 115, 116
commas replacing decimal points 179
converting to binary 114
converting to fractions 152
converting to octal 180
decimal points aligned 117
dollar format 127, 129
floating-point values 151
invalid data, substitute characters for 1541
missing values, substitute characters for 1565
p-values 190
Roman numerals 194
scientific notation 137
Social Security format 210
truncating 598, 865
words and numerical fractions 224
writing as words 225
writing in EBCDIC 195
writing negative values in parentheses 174
writing percentages 185
numeric data, reading
commas for decimal points 998
from column-binary files 974
standard format 1040
numeric data, writing 216
leading zeros 240
zoned decimal format 241
numeric expressions
missing values, returning a result for 648
numeric values
based on true, false, or missing expressions 586
choice from a list of arguments 436