https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-data/cc-8th-line-of-best-fit/v/example-estimating-from-regression-line 2023-05-12T21:01:01.897246564Z Estimating with linear regression (linear models) A line of best fit is a straight line that shows the relationship between two sets of data. We can use the line to make predictions. To find the best equation for the line, we look at the slope and the y-intercept. Remember, this is just a model, so it's not always perfect! video https://cdn.kastatic.org/ka_thumbnails_cache/050b721e-e79a-4473-8d03-3e6836a1eb9b_1280_720_base.png Estimating with linear regression (linear models) A line of best fit is a straight line that shows the relationship between two sets of data. We can use the line to make predictions. To find the best equation for the line, we look at the slope and the y-intercept. Remember, this is just a model, so it's not always perfect! https://cdn.kastatic.org/ka-youtube-converted/TWkYalFn8lo.mp4/TWkYalFn8lo.mp4 203 Estimating lines of best fit https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-data/cc-8th-line-of-best-fit/e/equations-of-lines-of-best-fit-to-make-predictions 2023-12-11T22:13:00.981327266Z Estimating equations of lines of best fit, and using them to make predictions Practice estimating the equation of a line of best fit through data points in a scatter plot. Then, use the equation to make a prediction. Jeff exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-data/cc-8th-line-of-best-fit/v/interpreting-trend-line 2023-05-12T21:01:01.897246564Z Interpreting a trend line The graph shows how studying affects test scores. The line slope of 15 means that for each extra hour of studying, there is usually a 15-point increase in test score. But it's not a guarantee. Some students may do better or worse than the trend. Sal Khan video https://cdn.kastatic.org/googleusercontent/q6LtptyvaCJtK4B65rKXTxIBmuj58LNfXUvDVnBXexPpKLWuKR_luyJu8lkPcR8AVjDN0bE-8rHBTxpN9Zm7lrls Interpreting a trend line The graph shows how studying affects test scores. The line slope of 15 means that for each extra hour of studying, there is usually a 15-point increase in test score. But it's not a guarantee. Some students may do better or worse than the trend. https://cdn.kastatic.org/ka-youtube-converted/mfX_yUvwJho.mp4/mfX_yUvwJho.mp4 208 Estimating lines of best fit https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-data/cc-8th-line-of-best-fit/e/interpreting-slope-and-y-intercept-of-lines-of-best-fit 2026-04-14T00:00:43.457569308Z Interpreting slope and y-intercept for linear models Practice explaining the meaning of slope and y-intercept for lines of best fit on scatter plots. Jeff exercise