Find the correlation
Q: Compute r, the correlaton coeffcient, USma the follout data X. 434
A: The correlation coefficient r is computed using the formula below: r=n∑xy×-∑x∑yn∑x2-∑x2×n∑y2-∑y2…
Q: Describe an example in which two variables are strongly correlated, but changes in one do not cause…
A:
Q: Compute the correlation coefficient between the price of eggs and the price of milk.
A: Here , X = average price in dollars for dozens of eggs Y = average price in dollars for gallons of…
Q: How does the size of the correlation affect how much change scores vary? The higher the correlation,…
A: Correlation: Correlation is used to determine when a change in one variable can result in change in…
Q: Student1 Student2 Student3 Student4 Student5 Student6 Student7 Student8 Student9 Height…
A: Let the independent variable X denote the height Let the dependent variable Y denote the weight…
Q: (b) Compute the correlation coefficient between the price of eggs and the price of milk. Round the…
A: Define the variable dozen eggs as x and the variable gallon of milk as y.
Q: Interpret the association. During George Bush's presidency there was a strong negative correlation…
A: Correlation coefficient measures the degree of linear relationship between variables.
Q: The scatterplot below shows? -weak positive correlation -strong positive correlation -weak…
A: The scatterplot is given.
Q: Scenario: A company conducts research and finds a perfect correlation between job satisfaction and…
A: We know that Correlation coefficients:- The correlation coefficients measures the direction &…
Q: which statement regarding correlation is true? The dependent variable is assigned to the Y-axis…
A: Correlation formula :
Q: R'is the square of the correlation, so both measure the direction of the relationship between two…
A: R-Squared is square of correlation r but they measures different things.
Q: Use the value of the linear correlation coefficient r to find the coefficient of determination and…
A: Given r=0.986
Q: An instructor finds that she cannot predict a student's performance on an exam based on their…
A: The objective of the question is to identify the correlation coefficient that best represents the…
Q: find the correlation coefficient r. x y 7 15 10 16 15 25 18 32
A: Calculation: From the table,
Q: Give examples of 2 variables that are positively correlated and two that are negatively correlated.
A: We need to use the concept of Positive and Negative correlation.
Q: For the example below, what type of correlation would you expect? Degrees of an oven and cooking…
A: Given that ; For the example below, what type of correlation would you expect? Degrees of an oven…
Q: The data in the chart shows the maximum and corresponding resting heart rate of a healthy 20-year…
A: Solution-: Let, X=Resting heart rate and Y=Maximum heart rate We have following data: X Y 50…
Q: hich of these shows the strongest correla
A: A scatterplot is a graphic plot in which two sets of data are plotted against each other, along two…
Q: Linear Regression Discuss any two variables that you believe are correlated. Clearly state your…
A: Linear regression
Q: In this scatter plot the correlation between the variables X and Y is : 10 20 30 40 50 O strong and…
A:
Q: For each example, state whether one correlation is stronger than the other. If one is stronger, then…
A: Explain which correlation is stronger for the given situation.
Q: Gamma hat= 0.36 for the relationship between family income (below average, average, above average)…
A:
Q: The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are…
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Q: Suppose you are given the following five pairs of scores: X 6 9 6 8 1 Y 2 3 4 6 10 Create a scatter…
A: x y 6 2 9 3 6 4 8 6 1 10 positive correlation : it is an association between variables.…
Q: find the correlation coefficient r. x y 5 8 9 10 11 13 17 19
A: Solution: The given data is
Q: Find the type of correlation from the graph. Positive correlation O Negative correlation No…
A: Identify the type of correlation exists in the graph. The type of correlation exists in the graph…
Q: Use the linear correlation coefficient given to determine the coefficient of determination, r². r =…
A: r=-0.8426
Q: Find the value of the linear correlation coefficient r. Toyota Motors designed 2 different tests to…
A: X=25, 25,28,21,20,25,26,30,35,36 Y=49,51,59,42,49,53,55,63,67,75 We want to find correlation (r)
Q: Find teh correlation coefficient between X and Y X 57 58 59 59 60 61 62 64 Y 77 78 75 78 82 82 79…
A: From given data we have : X 57 58 59 59 60 61 62 64 Y 77 78 75 78 82 82 79 81
Q: State the type of correlation between the number of hours students spend studying and the number of…
A: Correlation is the measure of linear association between two quantitative variables. If one…
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- Give an example of a scatter plot with 5 points that has a correlation of r=0 on the axes below. How did you arrive at your scatter plot?y 6 4 2 0 0 2 4 6 8 x Tell whether the data have a positive correlation, a negative correlation, or approximately no correlation.Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage of the total variation that can be explained by the linear relationship between the two variables. r=0.947, where x = distance in miles and y=fare in dollars What is the value of the coefficient of determination? The coefficient of determination is (Round to four decimal places as needed.) G Camera Search your device, apps, settings, web.... G Docs Chrome Gmail 1)
- The figure below plots the average brain weight in grams vs. average body weight in kg for 96 mammals. Brain weight (g) 4000- 3500 3000- 2500- 2000- 1500 Dolphin Human 1000- 500- 0 Hippo ▬▬▬▬ 800 1200 1600 2000 2400 2800 Body weight (kg) The correlation is r = 0.86. Explain what this value means. 400 type your answer... Elephant What effect would removing the elephant have on the correlation? Justify your answer. type your answer...Whn determining whether there is a correlation between two variables ,one should use a to explore the data visually.Dataset physical is available here. The figure for this exercise is a scatterplot of y 61 60 Head circumference (cm) gཆ ཆུ 56 55 54 59- 58 57 = head circumference (centimeters) versus x = height (inches) for 30 females. 53 60 62 64 66 Height (in.) 68 70 72 (a) Which association does the plot show between the two variables? Explain. There is a positive association since the average head circumference seems to decrease as height increases. There is a negative association since the average head circumference seems to increase as height increases. There is a negative association since the average head circumference seems to decrease as height increases. There is a positive association since the average head circumference seems to increase as height increases. There is no association since the average head circumference is approximately the same across heights. (b) One data point appears to be an outlier. What are the approximate values of height and head circumference for that point?…
- Use the value of the linear correlation coefficient r to find the coefficient of determination and the percentage of the total variation that can be explained by the linear relationship between the two variables. r=0.853Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axes are the same for each diagram. (a) r = -1 (b) r= -0.933 (c) r=-0.523 (d) r= -0.038 Click the icon to view the scatter diagrams. r= -0.933 r= -1 r= -0.523 r=-0.038 Drag each of the r-values given above into the appropriate area below. Q Response Explanatory Response Explanatory Q *** Response Explanatory Q Response ExplanatoryExplain what correlation is and why two variables might be described as having a negative correlation. Age and education: A survey of U.S. adults showed that there is a negative correlation between age and education level. Does this mean that people become less educated as they become older? why or why not?
- Which plot indicates a correlation of 0.7? A R 8 8 in 10 ACompute the correlation coefficient between the price of eggs and the price of milk. Round the answer to at least three decimal places.Distinguish the correlation shown in the graph below. Summarize why it is the chosen correlation. 30 Use the paperclip button below to attach files. Student can enter max 3000 characters 1- XD 2= DELL to B I U 25 de 2
