@PGStats , I tried the code below: proc reg data=one;
model preference=moisturecontent*moisturecontent sweetness*sweetness
moisturecontent*sweetness;
run; And keep getting this error: 10 proc reg data=one;
11 model preference=moisturecontent*moisturecontent sweetness*sweetness
-
22
76
ERROR 22-322: Syntax error, expecting one of the following: a name, ;, -, /, :, _ALL_,
_CHARACTER_, _CHAR_, _NUMERIC_, {.
ERROR 76-322: Syntax error, statement will be ignored.
12 moisturecontent*sweetness;
NOTE: The previous statement has been deleted.
13 run;
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