Quiz_5_Student_Version_D

# Quiz_5_Student_Version_D - Quiz 5 Page 1 Chapter 10 1. The...

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Unformatted text preview: Quiz 5 Page 1 Chapter 10 1. The prices a non-member paid for various books and the prices a member paid for the same publications are listed below. Non-member Member Price, x Price, y 58 32 42 22 46 20 32 16 25 19 75 58 35 34 63 48 Find the value of A) 93,624 B) 19,712 C) 9349 D) 13,251 2. When looking at the relationship between pairs of data. It can best be examined from the point of view of which of the following descriptive statistics data presentation tool. A) Pareto graph B) Scatter plot C) Pie chart D) Histogram 3. The data plotted below depicts the flow rate of a manufacturing process with different temperature changes. The process engineer wants to know what type of relationship exists based on the data collected. What type of relationship exists between the change in temperature and the flow rate? A) There is no relationship. B) positive C) negative D) curvilinear x 2 Quiz 5 Page 2 4. Compute the standard error of the estimate for the data below. X values 3 2 2 5 10 Y values 4 6 2 0 3 A) 2.89 B) 1.96 C) 0.87 D) 2.36 5. Compute the slope of the regression line for the data below. X values 3 0 3 5 3 Y values 7 4 2 2 3 A) 4.13 B) 0.72 C) 0.5 D) 1.20 6. If the equation for the regression line is y = 4x - 7, then the slope of this line is A) 4 B) 3 C) -4 D) - 7 7. Compute the correlation coefficient for the data below X values 4 1 1 3 4 Y values 3 1 2 3 1 A) 0.77 B) 0.013 C) 0.286 D) 0.082 8. The equation of a regression line is y = 6.4 + 3.2x . What is the intercept of this line? A) 6.4 B) 6.4 C) 4.6 D) 3.2 9. Compute the correlation coefficient for the data below X values 2 1 0 3 Y values 4 2 8 1 A) 0.142 B) 0.429 C) 0.792 D) 0.349 Quiz 5 Page 3 10. Compute the correlation coefficient for the data below X values 3 1 2 Y values 4 6 2 A) 0.227 B) 0.431 C) 0.454 D) 0.159 11. Compute the intercept of the regression line for the data below. X values 5 1 4 Y values 7 6 2 A) 3.46 B) 3.67 C) 7.06 D) 1.55 12. Compute the intercept of the regression line for the data below. X values 3 1 5 8 Y values 3 2 3 0 A) 2.22 B) 1.60 C) 2.93 D) 1.77 13. What is the equation for the regression line if n 7 , x 69 , y 528 , xy 4754 , and x 2 825 ? A) y x 3110 106 089 . . C) y x 109 638 2168 . . B) y x 2168 109 638 . . D) y x 106 089 3110 . . 14. Ten pairs of points yielded a correlation coefficient r of 0.79. If 0 05 . , which of the following statements is correct if H : ? (Do not calculate a t-value.) A) Because 0.79 is greater than 0.632, the null hypothesis is rejected....
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## This note was uploaded on 03/25/2012 for the course MATH, STAT 302 taught by Professor M during the Spring '11 term at American Public University.

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Quiz_5_Student_Version_D - Quiz 5 Page 1 Chapter 10 1. The...

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