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 Rectas de tendencia https://www.khanacademy.org/math/probability/xa88397b6:scatterplots/estimating-trend-lines/a/equations-of-trend-lines-phone-data 2023-02-22T02:28:53.374012061Z Equations of trend lines: Phone data article 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 2026-02-24T15:30:30.425876844Z 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