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[DOC File]Using the Sobel Test Online Calculator
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The authors of the article tested the mediation hypothesis (that part of the reason the gun manipulation increases aggression is by increasing testosterone, which, in turn, increases aggression) with the Sobel test using this online calculator.
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[DOC File]A correlation exists between two quantitative variables ...
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Two Methods: p-value approach (done in class, in textbook and in chapter notes) critical value approach (in textbook– not done in class, not in chapter notes) p-value tells us how likely it is that a given sample correlation coefficient, r, will occur if ρ = 0 (if there was not any linear relationship between x …
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[DOC File]Section 10
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Calculate the test statistic and P-value from the calculator using LinRegTTest. Compare the P-value to (. If P–value < α, Reject H0. If P–value > α, Do Not Reject H0. State conclusion. There will either be a significant (positive or negative) linear correlation or no significant linear correlation. Calculator instructions for LinRegTTest ...
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[DOC File]Rule of Thumb for Interpreting the Size of a Correlation ...
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Rule of Thumb for Interpreting the Size of a Correlation Coefficient Size of Correlation Interpretation .90 to 1.00 (-.90 to –1.00) Very high positive (negative) correlation .70 to .90 (-.70 to -.90) High positive (negative) correlation .50 to .70 (-.50 to -.70) Moderate positive (negative) correlation .30 to .50 (-.30 to -.50) Low positive (negative) correlation .00 to .30 (.00 to -.30 ...
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[DOC File]Texas Instrument BAII PLUS Tutorial
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If you press one more time, “r =” appears on the screen. This is the value of . the correlation coefficient of the regression line. (The intercept value is -8.92, the slope value is 1.60, and the correlation coefficient is 0.91.) Clear the calculator by pressing . Amortization
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[DOC File]Natural Gas Pipeline Flow Calculations
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Harlan H. Bengtson, PhD, P.E. COURSE CONTENT. 1. Introduction. There are numerous equations that can be used to make natural gas pipeline flow calculations depending upon various factors, such as the magnitude of the pressure drop, the pipe diameter, the length of the pipeline, the Reynolds number, and whether the flow can be considered isothermal or adiabatic.
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Computational Public Health Statistics (HS267)
This statistic is converted to a p value in the usual manner. Use your F table to determine the p value for the test: _____ < P < _____ Confidence interval for the slope . The sample slope b is the estimator of population slope β. To derive a confidence interval for β, first determine the variance of …
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[DOC File]Sampling and Sample Size - Columbia University
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As an approximation, for 95% confidence, use the value of 2 for zα (instead of 1.96) – remember that this is an approximation, after all! Also, use the most conservative value of P, which is 0.5. Then the formula is a very concise and easily remembered: N = 1 / E2 That is, “one over the square of the margin of error”.
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[DOC File]AP Statistics - Chapter 3 Summary Sheet
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Switch the axes, and the r – value remains the same. Correlation requires Quantitative Variable only. (Ex: There is no such thing as a correlation between race and crime; or gender and IQ.) Because r (based on standardized z-values) is itself, unit-less … changes units of measure will not alter the r value.
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[DOC File]CHAPTER 11—REGRESSION/CORRELATION
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While the r value might be 0, there could well be a NON LINEAR RELATIONSHIP between X and Y! To avoid this misinterpretation, ALWAYS PLOT YOUR DATA!!!!! 4. Note that the correlation measure quantifies both the DEGREE AND DIRECTION of the LINEAR relationship between X and Y, whereas R2 only quantifies the DEGREE of the LINEAR relationship. 5.
correlation coefficient

P value for correlation calculator