Experimental Designs: Latin Square

Experimental Design

Experimental design refers to how participants are allocated to the different conditions (or IV levels) in an experiment.

The procedure followed in the experimental design is that the subjects are divided in to two groups. Namely, control group and experimental group. Then the researcher gives intervention or training for the experimental while control group remains the same. Researcher tries to find out whether there is any association between the depen…

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Standardized Regression Analysis and Standardized Coefficients

Standardized Regression Analysis and Standardized Coefficients

Regression analysis is done with X and Y. The Z is a standard score of a variable. Z can be calculated for each of the variable with the formula given below:

${\displaystyle Z=\frac{X-\stackrel{̲}{X}}{S}}$

The mean of the Z is zero and the standard deviation is one.

Now, instead of predicting Y from X, we calculate the Z scores for both X and Y.

They will be denoted as ${\displaystyle Z_X}$ an…

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Ordinary Least Squares (OLS)

Ordinary Least Squares (OLS)

Recall the data between the stigma scores and number of appointments missed by the person. Now, to draw the straight line that will explain the relationship between the stigma scores and number of appointments missed, then there will be many such lines possible. Out of them, which line we should consider as the best fit line?

It is not possible to draw a straight line that will pass through all the points. And many lines are possible with the ea…

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