Homework Answers
a)scatterplot is attached above
b)
Yes there appear to be a negative relationship between x and y,,,,
c)
r=-0.99
yes the value of r indicates a strong negative relationship between x and y
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Consider this set of bivariate data. y| 5.6 4.7 4.6 3.7 3.4 2.6 (a) Draw a...
A set of bivariate data consists of these measurements on two variables, x and y: 2...
A set of bivariate data consists of these measurements on two variables, x and y: 2 4 4 6 8 4 7 6 (a) Make a scatterplot. Comment on the form, direction, and strength of the relationship. The relationship appears to be linear, positive, and fairly weak. The relationship appears to be linear, negative, and fairly strong. The relationship appears to be linear, positive, and fairly strong. The relationship appears to be linear, negative, and fairly weak. ● The relationship...
Let x be the average number of employees in a group health insurance plan, and let...
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 33 72 y 40 35 30 25 20 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Get Flash Player Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website....
Ignore the Adobe Flash Player Part How much should a healthy Shetland pony weigh? Let x...
Ignore the Adobe Flash Player Part
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) 3 60 95 6 14 140 170 187 12 26 (a) Make a scatter diagram of the data and visualize the line you think best fits the data Get ADOBE FLASH PLAYER Flash Player version 10 or higher is required for this question You...
Let x be the average number of employees in a group health insurance plan, and let...
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 36 72 y 40 35 30 26 21 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? positive or negative?...
Consider a data set consisting of values for three variables: x, y, and z. Three observations...
Consider a data set consisting of values for three variables: x, y, and z. Three observations are made on each of the three variables. The following table shows the values of x, y, z, x2, y2, z2, xy, yz, and xz for each observation. Observation x y z x2 y2 z2 xy yz xz 6 6 2 36 36 4 36 12 12 4 3 8 16 9 64 12 24 32 2 6 5 4 36 25 12 30...
EQuesion Hep * Reler to the accompanying scatterplot a. Examine the pattern of all 10 points...
EQuesion Hep * Reler to the accompanying scatterplot a. Examine the pattern of all 10 points and subjectively determine whother thore appears to be a strong comelation between x and y b. Find the value of the comelation coeficient r and determine whether there is a linear comelation c. Remove the point with coondinates (10,10) and find the comelation coefficient r and determine whether there is a linear corelation d. What d you conclude about the possible eect hom a...
Below are four bivariate data sets and the scatter plot for each. (Note that each scatter...
Below are four bivariate data sets and the scatter plot for each. (Note that each scatter plot is displayed on the same scale.) Each data set is made up of sample values drawn from a population. x y 1.0 4.1 2.0 6.1 3.0 7.0 4.0 4.0 5.0 5.2 6.0 8.1 7.0 5.5 8.0 6.9 9.0 9.0 10.0 7.3 x1234567891011y12345678910110 Figure 1 u v 1.0 8.1 2.0 7.4 3.0 8.1 4.0 6.1 5.0 7.4 6.0 4.5 7.0 4.6 8.0 3.4...
I will rate, please help!!! Consider the following data concerning the demand (y) and price (x)...
I will rate, please help!!!
Consider the following data concerning the demand (y) and price (x) of a consumer product. Demand, y Price, x 247 230 $2.06 $2.20 $2.47 $2.67 $2.88 $2.96 253 244 220 235 Type the data into Minitab as two COLUMNS (labeled Y (demand) and X (price)). Create a scatterplot to see the relationship between demand and price (a) From the plot, does it seem reasonable to use the simple linear regression model to relate y to...
A consumer magazine listed the price in dollars) and power (in cold cranking amps) of auto...
A consumer magazine listed the price in dollars) and power (in cold cranking amps) of auto batteries. A test is run to determine if more expensive batteries are generally better in terms of starting power. Use the technology output given below to answer parts a) through g). Click the icon to view technology output. b) Are the conditions for inference satisfied? Explain. Select all conditions for inference that are satisfied. O O A. The scatterplot of the data is roughly...
Bivariate data obtained for the paired variables x and y are shown below, in the table...
Bivariate data obtained for the paired variables x and y are shown below, in the table labelled "Sample data." These data are plotted in the scatter plot in Figure 1, which also displays the least-squares regression line for the data. The equation for this line is y = -0.17+ 1.17x. In the "Calculations" table are calculations involving the observed y values, the mean y of these values, and the values y predicted from the regression equation. Sample data Calculations 69...
A set of bivariate data consists of these measurements on two variables, x and y: 2 4 4 6 8 4 7 6 (a) Make a scatterplot. Comment on the form, direction, and strength of the relationship. The relationship appears to be linear, positive, and fairly weak. The relationship appears to be linear, negative, and fairly strong. The relationship appears to be linear, positive, and fairly strong. The relationship appears to be linear, negative, and fairly weak. ● The relationship...
Ignore the Adobe Flash Player Part
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) 3 60 95 6 14 140 170 187 12 26 (a) Make a scatter diagram of the data and visualize the line you think best fits the data Get ADOBE FLASH PLAYER Flash Player version 10 or higher is required for this question You...
Consider a data set consisting of values for three variables: x, y, and z. Three observations are made on each of the three variables. The following table shows the values of x, y, z, x2, y2, z2, xy, yz, and xz for each observation. Observation x y z x2 y2 z2 xy yz xz 6 6 2 36 36 4 36 12 12 4 3 8 16 9 64 12 24 32 2 6 5 4 36 25 12 30...
EQuesion Hep * Reler to the accompanying scatterplot a. Examine the pattern of all 10 points and subjectively determine whother thore appears to be a strong comelation between x and y b. Find the value of the comelation coeficient r and determine whether there is a linear comelation c. Remove the point with coondinates (10,10) and find the comelation coefficient r and determine whether there is a linear corelation d. What d you conclude about the possible eect hom a...
I will rate, please help!!!
Consider the following data concerning the demand (y) and price (x) of a consumer product. Demand, y Price, x 247 230 $2.06 $2.20 $2.47 $2.67 $2.88 $2.96 253 244 220 235 Type the data into Minitab as two COLUMNS (labeled Y (demand) and X (price)). Create a scatterplot to see the relationship between demand and price (a) From the plot, does it seem reasonable to use the simple linear regression model to relate y to...
A consumer magazine listed the price in dollars) and power (in cold cranking amps) of auto batteries. A test is run to determine if more expensive batteries are generally better in terms of starting power. Use the technology output given below to answer parts a) through g). Click the icon to view technology output. b) Are the conditions for inference satisfied? Explain. Select all conditions for inference that are satisfied. O O A. The scatterplot of the data is roughly...
Bivariate data obtained for the paired variables x and y are shown below, in the table labelled "Sample data." These data are plotted in the scatter plot in Figure 1, which also displays the least-squares regression line for the data. The equation for this line is y = -0.17+ 1.17x. In the "Calculations" table are calculations involving the observed y values, the mean y of these values, and the values y predicted from the regression equation. Sample data Calculations 69...
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