STA201H1 Lecture Notes - Lecture 5: Bitcoin, Scatter Plot, Linear Equation
15 Mar 2018
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Ex) estimate the average hourly growth rate for the interval indicated. Growth rate: negative b/c as time goes up, value goes down. Avg. growth rate: (cid:3032)(cid:3041)(cid:3031) (cid:3049)(cid:3028)(cid:3039)(cid:3048)(cid:3032) (cid:3046)(cid:3047)(cid:3028)(cid:3045)(cid:3047) (cid:3049)(cid:3028)(cid:3039)(cid:3048)(cid:3032) (cid:3047)(cid:3040)(cid:3032) (cid:3041)(cid:3047)(cid:3032)(cid:3045)(cid:3049)(cid:3028)(cid:3039) Ex) use your calculated average hourly growth rate to estimate the value of a bitcoin yesterday at 9:00-9:01am. /hr starting @7:00am: ,940. 84 2() = ,818. 84, off by . 84 . 19 = . 65. In general: y = mx+b y = (growth rate)x + (initial value: b: y-intercept or initial value. Example q: the 2018 golf gti has an average combined (city and highway) fuel consumption. Example q) below is a scatterplot of sizes of diamonds (in grams) and their prices in singaporean dollars (1 carat = 0. 2 g). The regression line is estimated to be: y = 3721. 02 x -259. 62. Use the regression line to estimate the price of a 1 carat diamond. Y = 3721. 02 (0. 2) 259. 62 = . 58.
