Explain whether x and y appear to be highly correlated.

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Answer 1

Question

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

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a. Explain pearson's correlation coefficient based image. b. Explain each table based image. c. Explain cronbach's alpha for each variables based image.

1. Find the correlation coefficient for the measurements

Following are measurements of soil concentrations (in mg /kg) of chromium (Cr) and nickel (Ni) at20 sites in the area of Cleveland, Ohio. These data are taken from the article "Variation in NorthAmerican Regulatory Guidance for Heavy Metal Surface Soil Contamination at Commercial andIndustrial Sites" (A. Jennings and J. Ma, J. Environment Eng, 2007:587-609). Cr: 260 19 36 247 263 319 317 277 319 264 23 29 61 119 33 281 21 35 64 30Ni: 435 377 359 53 38 38 54 188 397 33 92 490 28 35 799 347 321 32 74 508 (a) Construct a histogram for each set of concentrations. (b) Find the 1st, 2nd and 3rd quartiles for the Cr concentrations (c) Find the 1st, 2nd and 3rd quartiles for the Ni concentrations.

Answer 2

Question

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

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Answer 3

Question

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

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Answer 4

Question

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

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Answer 5

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

Answer 6

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

Answer 7

Chapter 5, Problem 15CRE

a.

To determine

Explain whether x and y appear to be highly correlated.

Answer 8

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

Answer 9

b.

To determine

Describe the relationship between the two variables, if r=0.9366.

Answer 10

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

Answer 11

c.

To determine

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 5.1 - For each of the scatterplots shown, answer the...Ch. 5.1 - For each of the following pairs of variables,...Ch. 5.1 - Is the following statement correct? Explain why or...Ch. 5.1 - Prob. 4E Ch. 5.1 - Prob. 5E Ch. 5.1 - The accompanying data are x = Cost (cents per...Ch. 5.1 - The authors of the paper Flat-footedness Is Not a...Ch. 5.1 - Prob. 8E Ch. 5.1 - Prob. 9E Ch. 5.1 - The accompanying data were read from graphs that...

Explain whether x and y appear to be highly correlated.

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Explain whether x and y appear to be highly correlated.

Describe the relationship between the two variables, if r=0.9366.

Explain whether a perfect correlation, or r=1 would result in the given line, which has a slope of 1 and passes through the point (0, 0).

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