Reference no: EM13263819
1. In developing a regression equation from the following data to predict y by x, the slope is:
a) 1.88, b) 0.44, c) 4.76, d) 0.18
2. In developing a regression equation from the following data to predict y by x, the y intercept is:
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x
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y
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11
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5
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16
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8
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4
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6
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2
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5
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3
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4
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a) 3.504, b) 4.256, c) 10.550, d) 0.1867
3. A simple regression model has been developed using a sample of 11 pairs of observations. The sum of squares of error is 237.64. The standard error of the estimate is:
a) 5.139, b) 4.875, c) 4.648, d) 23.764
4. Consider the following output from a regression analysis. Based on this output, what is the equation of the regression model?
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ANOVA
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df
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SS
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MS
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F
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Regression
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1
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9315.23
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9315.23
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8.46
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Residual
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9
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9907.49
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1100.83
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Total
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10
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19222.73
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Coefficients
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Standard Error
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t Stat
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P-value
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Intercept
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2100.10
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53.18
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11.40
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.0000019
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X Variable 1
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-0.51
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1.64
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-2.91
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0.017341
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a) y= 9907.49 + 9315.23x
b) y=606.47 - 4.76x
c) y= 57.60 - 11.26x
d) y= 2100.10 - 0.51x
5. The following information is obtained for a sample of 70 observations taken from a population.
SSxx = 370.628 ,se = 0.961 , and y= 155.92 - 2.93 x
Make a 97% confidence interval for B.
The 97% confidence interval for B is (___________, ____________) [Round your answers to 2 decimal places.]
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