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16y ago

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What is the value of linear absorption coefficient for Gold?

The linear absorption coefficient for gold depends on the wavelength of the incident light. At a typical visible wavelength of around 550 nm, gold has a linear absorption coefficient of approximately 5.5 x 10^5 cm^-1.


What is the range of correlation coefficient and what does its value tell?

The product-moment correlation coefficient or PMCC should have a value between -1 and 1. A positive value shows a positive linear correlation, and a negative value shows a negative linear correlation. At zero, there is no linear correlation, and the correlation becomes stronger as the value moves further from 0.


What measures the strength of the linear relationship between two quantitative variables?

The strength of the linear relationship between two quantitative variables is measured by the correlation coefficient. The correlation coefficient, denoted by "r," ranges from -1 to 1. A value of 1 indicates a perfect positive linear relationship, -1 indicates a perfect negative linear relationship, and 0 indicates no linear relationship. The closer the absolute value of the correlation coefficient is to 1, the stronger the linear relationship between the variables.


Correlation coefficient value mean?

The correlation coefficient is a measure of linear association between two (or more) variables. It does not measure non-linear relationships nor does it say anything about causality.


What is the relationship of coefficient linear expansion to actual expansion?

The coefficient of linear expansion is a constant value that quantifies how much a material expands per degree Celsius increase in temperature. The actual expansion of an object can be calculated by multiplying the coefficient of linear expansion by the original length of the object and the temperature change.


What is regression coefficient and correlation coefficient?

The strength of the linear relationship between the two variables in the regression equation is the correlation coefficient, r, and is always a value between -1 and 1, inclusive. The regression coefficient is the slope of the line of the regression equation.


You calculated the linear absorption coefficient of lead for gamma radiation of about 1MeV to be 0.1mm-1 Is this a reasonable value?

Yes, a linear absorption coefficient of 0.1 mm^-1 for lead at 1 MeV gamma radiation is a reasonable value. Lead is an effective shield for gamma radiation due to its high density and atomic number, which results in strong interactions with gamma rays, leading to effective absorption at this energy level.


Is the slope of a line positive when doing linear regression if the correlation coefficient is negative?

No, the slope of a line in linear regression cannot be positive if the correlation coefficient is negative. The correlation coefficient measures the strength and direction of a linear relationship between two variables; a negative value indicates that as one variable increases, the other decreases. Consequently, a negative correlation will result in a negative slope for the regression line.


What is numerical measure of linear association between two variables?

The numerical measure of linear association between two variables is typically represented by the Pearson correlation coefficient (r). This value ranges from -1 to 1, where -1 indicates a perfect negative linear relationship, 1 indicates a perfect positive linear relationship, and 0 signifies no linear relationship. The closer the coefficient is to either -1 or 1, the stronger the linear association between the variables.


Spearman's rank correlation coefficient for grouped data?

Although Spearman's rank correlation coefficient puts a numerical value between the linear association between two variables, it can only be used for data that has not been grouped.


What is the perfect trinomal of x squared plus 24x plus c?

The idea is to take half the coefficient of the linear term (in this case, of 24), and square it. This will be the value for "c".


What is the nickel value worth?

the value of the nickel is 5 cent