Linear regression: enter x, y pairs

Linear regression. Press , , : 0.. The pairs are entered as $\displaystyle x$, the x y key, $\displaystyle y$, and DATA. Type 2, press , type 5, and press : 1.. Press again for the same pair a second time: 2.. Type 12, press , type 24, and press : 3.. The pair 21 and 40 appears 3 times: type 21, press , type 40, press , type 3, and press : 4.. Type 15, press , type 25, and press : 5..

▶ Watch this step in the video (56:16)