Question Use the data given below: x y 2.3 3.9 4 1.4 2.9 3.5 4.7 5 additional data point (10.3, 9.3) Explain why correlations should always be reported with scatter diagrams? Choose one of the following to answer a) the scatter diagram can be used to distinguish between association and causation. b) the scatter diagram is needed to determine if the correlation is positive or negative.

Question Use the data given below: x y 2.3 3.9 4 1.4 2.9 3.5 4.7 5 additional data point (10.3, 9.3) Explain why correlations should always be reported with scatter diagrams? Choose one of the following to answer a) the scatter diagram can be used to distinguish between association and causation. b) the scatter diagram is needed to determine if the correlation is positive or negative.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 14PPS

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Question

Use the data given below:

x y

2.3 3.9

4 1.4

2.9 3.5

4.7 5

additional data point (10.3, 9.3)

Explain why correlations should always be reported with scatter diagrams? Choose one of the following to answer

a) the scatter diagram can be used to distinguish between association and causation.

b) the scatter diagram is needed to determine if the correlation is positive or negative.

c) the scatter diagram is needed to see if the correlation coefficient is being affected by the presence of outliers.

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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