How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). x 3 6 12 18 23 y 60 95 140 158 187 (A) Would you say the correlation is low, moderate, or strong? (B)Would you say the correlation is positive or negative? (C)Compute r. (Round your answer to three decimal places.)

How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). x 3 6 12 18 23 y 60 95 140 158 187 (A) Would you say the correlation is low, moderate, or strong? (B)Would you say the correlation is positive or negative? (C)Compute r. (Round your answer to three decimal places.)

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter4: Linear Functions

Section: Chapter Questions

Problem 30PT: For the following exercises, use Table 4 which shows the percent of unemployed persons 25 years or...

See similar textbooks

Similar questions

For the following exercises, consider the data in Table 5, which shows the percent of unemployed in a city ofpeople25 years or older who are college graduates is given below, by year. 41. Based on the set of data given in Table 7, calculatethe regression line using a calculator or othertechnology tool, and determine the correlationcoefficient to three decimal places.
For the following exercises, consider the data in Table 5, which shows the percent of unemployed ina city of people 25 years or older who are college graduates is given below, by year. 40. Based on the set of data given in Table 6, calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient to three decimal places.
For the following exercises, consider this scenario: The population of a city increased steadily overa ten-year span. The following ordered pairs show the population and the year over the ten-year span (population, year) for specific recorded years: (3,600,2000);(4,000,2001);(4,700,2003);(6,000,2006) 44. What is the correlation coefficient for this model tothree decimal places of accuracy?
Running Speed A man is running around a circular track that is 200 m in circumference. An observer uses a stopwatch to record the runner’s time at the each of each lap, obtaining the data in the following table. (a) What was the man’s average speed (rate) between 68 s and 152 s? (b) What was the man’s average speed between 263 s and 412 s? (c) Calculate the man’s speed for cadi lap, Is he slowing down, speeding up, or neither?
The scale of the correlation coefficient is: a. nominal b. ordinal c. ratio
Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and YY the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between XX and YY. Use your calculator! x y 5 16.6 6 17.5 7 16.7 8 13.5 9 17 10 16.1 11 12.8 12 14.6 13 13.4 14 11.7 r=r= __?__
Find the coefficient of determination, given that the value of the linear correlation coefficient, r, is 0.681. (Round to four decimal places.)
How strong is this relationship? Obtain the correlation. (Provide your answer to four decimal places.) r=
A correlation coefficient (r) can be computed from all of the following research objectives except a. To determine the relationship between sex and educational activity b. To determine the relationship between mother s choice of infant feeding method (bottle or breast) and monthly family income c. To determine the association between systolic blood pressure and age d. To determine the association between laboratory performance and internship grades of students
The square of the correlation coefficient is called the a)variation b)coefficient of determination c)r d)coefficient or regression
Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and YY the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between X and Y. Use your calculator! x y 1 17.06 2 16.22 3 17.58 4 15.94 5 17.4 6 19.16 7 18.82 8 19.28 9 19.54 10 20.1 11 18.06 r= ( ? )
A regression was run to determine if there is a relationship between hours of TV watched per day (x) and the number of sit-ups a person can do (y). The results were: y = a+bxb = -0.89a = 23.09r2 = 0.4445 If a person watches 15 hours of television a day, predict how many sit-ups he can do. What is the value of the correlation coefficient? Round to three decimal places.