Table 8.3 shows decade averages of annual precipitation (mm) in the contiguous United States. Letting Y be
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Table 8.3 shows decade averages of annual precipitation (mm) in the contiguous United States. Letting Y be precipitation and X be the decade midpoints, 1905, 1915, and so on, draw a scatter diagram and use least squares to estimate the equation Y = α + βX + ε. Is there statistically persuasive evidence of a trend in precipitation?
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1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 747.50 714.80 731.77 685.08 754.84 711.62 717.67 761.53 753.79
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Related Book For
Essential Statistics Regression And Econometrics
ISBN: 9780123822215
1st Edition
Authors: Gary Smith
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