Match the following sample correlation coefficients with the explanation of what that correlation coefficient means. Type the correct letter in each box.1. r= 12. r = -13. r=-.154. r = .1A. a weak positive relationship between x and yB. a weak negative relationship between x and yC. a perfect negative relationship between x and yD. a perfect positive relationship between x and y

The correlation values are 1, -1, -.15 and .1.

Answered: Match the following sample correlation…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher calculates a correlation coefficient of -.38 for a sample of youths age 5 through 18 for the relationship between “age of the individual” and “number of crimes committed in the last 30 days.” The researcher then collects a sample of adults who are between the ages of 18 and 35 and calculates the correlation coefficient on the same two variables and concludes that the correlation coefficient is .42. Using these pieces of information, draw the relationship below.
Which of the following is the best estimate for the correlation r of the data in the scatterplot below! Answer choices: a.) 1.00 b.) 0.80 c.) -0.83
Which of the following is TRUE about the correlation coefficient? Choose the correct answer below. O A. We should only find correlation between two variables if they are quantitative, the association is straight enough, and there are no outliers. O B. We should always calculate the correlation between two variables. O C. Correlation proves causation.
Use the data set below to answer the following questions where weight is your independent variable and MPG is your dependent variable: 4. Give a predicted value of yˆfor a value of the explanatory variable which is not an actual observation in your data set. 6. What is the correlation coefficient, r? Interpret r.
3. For the information given below, find the correlation coefficient and describe the type of correlation that exists between the data. Then find the line of best fit. If the correlation is strong, then predict a single data point that is higher than those found in the table. If the correlation is not strong, then state this in a sentence. The table below lists gas prices (dollars per gallon) for regular and premium gas at 8 randomly selected WAWA gas stations in the Orlando area. 2.99 3.65 2.89 3.09 3.21 2.55 2.61 Regular Gas Premium Gas 3.98 3.84 3.99 3.69 3.54 3.66 3.98 2.79 3.99
Which value of r indicates a stronger correlation: r=0.844 or r= -0.867? Explain your reasoning. Choose the correct answer below. O A. r= -0.867 represents a stronger correlation because | -0.867| > |0.844. B. r=0.844 represents a stronger correlation because 0.844> -0.867. OC. r=0.844 represents a stronger correlation because | -0.867| > |0.844|. D. r= -0.867 represents a stronger correlation because 0.844 > -0.867.
this question has 6 parts. thanks you
Match the following sample correlation coefficients with the explanation of what that correlation coefficient means. Type the correct letter in each box. 1. r=−1 2. r=0 3. r=.1 4. r=−.15 A. a perfect negative relationship between x and yB. a weak positive relationship between x and yC. no relationship between x andyD. a weak negative relationship between x and y
Which value of r indicates a stronger correlation: r= 0.841 or r= - 0.949? Explain your reasoning. Choose the correct answer below. O A. r= 0.841 represents a stronger correlation because -0.949 > 0.841|. B. r= - 0.949 represents a stronger correlation because -0.949|> |0.841|. C. r= - 0.949 represents a stronger correlation because 0.841 > - 0.949. D. r= 0.841 represents a stronger correlation because 0.841 > - 0.949.
B). Using the linear correlation coefficient found in the previous step, determine whether there is sufficient evidence to support the claim of a linear correlation between the two variables. Choose the correct answer below. C) Identify the feature of the data that would be missed if part (b) was completed without constructing the scatterplot. Choose the correct answer below. A. The scatterplot reveals a distinct pattern that is a straight-line pattern with positive slope. B. The scatterplot does not reveal a distinct pattern. C. The scatterplot reveals a distinct pattern that is a straight-line pattern with negative slope. D. The scatterplot reveals a distinct pattern that is not a straight-line pattern. Clear
Which of the following correlation coefficients indicate the strongest relationship between two variables? A .20 B .87 C .80 D -.95
e. Compute the covariance and correlation coefficient r between the right tire pressure. f. How do you know the relationship between pressure in the left and right tires is positive. g. What value would a correlation coefficient (r) be close to if there was no (linear) relationship between the 2 tire pressures?

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