# ch4 - b. The coefficients of the least squares line :...

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Statistics Assignment 4.14 a. mean=32.9083333333333 median=32 mode=32 b. 4.15 mean=519.2 median=523 4.16 mean=11.185 median=11 4.23 ± 11 9670103

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4.33 a. punter1: variance=40.215918367347 ; standard deviation=6.34 punter2: variance=14.806530612245 ; standard deviation=3.85 punter3: variance=3.63306122448988 ; standard deviation=1.91 b. 4.35 variance=0.0857651464413726 standard deviation=0.292856870230788 4.38 3rd decile=6.6 6th decile=17.6 4.46
X Smallest = 22 Q1 = 35.25 Median = 51.5 Q3 = 71.25 Largest = 89 IQR = 36 Outliers: 4.52 a. Private Smallest = 213 Q1 = 228 Median = 237 Q3 = 245.75 Largest = 260 IQR = 17.75 Outliers: Public Smallest = 238 Q1 = 279 Median = 296 Q3 = 307 Largest = 359 IQR = 28 Outliers: 359, b. 4.58 a. covariance=417.60416666666 coeffocient of correlation=0.8547786913955

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Unformatted text preview: b. The coefficients of the least squares line : b1=5.2405 22 32 42 52 62 72 82 92 BoxPlot 213 223 233 243 253 263 273 28 BoxPlot 238 258 278 298 318 338 358 378 BoxPlot b0=2.6078 The least squares line: y=5.2405x+2.6078 4.59 a. covariance=73.77 b. coefficient of correlation=0.624771375973552 c. d. 4.61 covariance=11.7496527777778 coefficient of correlation=0.989070663798109 4.62a. covariance=-13.9631283875339 20 25 30 35 40 45 50 30 80 130 f(x) = 1.03x + 33.06 Least Squares Line study time marks coefficient of correlation=-0.287787737077178 b. Determine the least squares line for the planets data 2 83 398 a...
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## This note was uploaded on 05/17/2010 for the course ECON 31211 taught by Professor Hsu during the Spring '10 term at National Tsing Hua University, China.

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ch4 - b. The coefficients of the least squares line :...

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