Quick workflow
- Press STAT and choose Edit.
- Enter values in L1 and optional paired values in L2.
- Return to STAT and open the CALC menu.
- Choose the required statistics or regression command.
Practice method
Complete one example slowly, repeat the same key sequence without reading, and then change the numbers or function. This builds familiarity without relying on memorized answers.
Common mistake
Calculator errors often come from an incorrect mode, unfinished parenthesis, unsuitable graph window or entering a negative sign as subtraction. Check the display before repeating the calculation.